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eHam Forums => Antenna Restrictions => Topic started by: N6QWP on January 03, 2019, 04:45:29 PM



Title: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 03, 2019, 04:45:29 PM
Mentioned this request for suggestions on another unrelated thread, but thought this might be a more appropriate source of information.

Have an ongoing issue with a neighbor behind me about my dipole....which is "in their view".  Have 3 components that I would like to paint to diminish the impact on their water view.

I am downhill on a sloping hillside with water view, and, while I refuse to take down my dipole (no CC&R's), would like some ideas on how to spray paint the most obvious issues of my antenna to lessen the impact (or at least purported impact) for rebuttal "points".

I now have an 8' white fiberglass 2'' mast on the chimney =previously was 16', but, in an attempt at appeasement, took down one section.  Now want to re-install the other 8' section, so I need some retort info....when the **** hits the fan.

Would like to spray paint the white mast pieces, the joining B&W army green junction and the black RG-11U coax for minimum visual complaints.  The backdrop to their view of my antenna is water, hillside and blue/gray sky.

Looking for suggestions on a readily available spray paint color to make all of those less obvious....Light gray?  Light blue/gray?

Would also like to paint the 40/75 traps (which are at the ends of the 40 meter dipole=due to short available running space), but worry about any metallic ingredients in the spray paints that could lead to arcing or changes in resonance.  Will ultimately be running about 550 to 650 watts into the antenna.

Any suggestions or warnings?


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: NC5P on January 03, 2019, 05:49:25 PM
Avoid metallic paints at all costs as they may short out or detune things.  If you can take a photo of your hardware from your neighbor's vantage point see what is in the background and pick a color that is close to that.  No matter what you pick it probably will be out of place due to changing seasons, sky, water, etc. 


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 03, 2019, 07:32:40 PM
I wouldn't knowingly use metallic paint.  Guess I will have to go "into the lion's den"....but that is, at best,  only a good "last resort attempted solution".

If it comes to that, I agree, viewing from their windows should give great insight....only, at that point, I doubt we will "be civil".

Perhaps I should try to clandestinly try to get on their side porch and get some kind of idea what they are seeing?

Guess I will just have to wait until I see no activity or signs of occupancy....and risk being charged with Trespassing.  Love the drama that results from ham radio.

Still looking for suggestions on typical "STEALTHY" colors.....whatever they are?


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: WB6BYU on January 03, 2019, 08:03:44 PM
Grey is probably a good choice, though black generally works well, too.

Thin wire and small insulators help a lot.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 03, 2019, 08:21:13 PM
Dealing with 1KW rated wire, coax and traps.  Going to use 550-650 watts output.  
 
Black is already an observable problem.  Need something that "attempts to make them less visable.

Be advised.....I am dealing with people who have no desire to "negotiate".  Nothing will be "acceptable".  I am just looking for something to offer as a compromise....if that is even possible.

Trying to avoid an all out war.....perhaps to no avail.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: W9IQ on January 04, 2019, 04:29:28 AM
I have successfully used the Krylon brand of non-metallic paints. My use is typically to improve the UV resistance of PVC components and to refinish aging fiberglass radomes.

- Glenn W9IQ


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: K5LXP on January 04, 2019, 08:18:52 AM

There are commercial antennas I've seen that are sky blue. 

(https://www.commscope.com/catalog/imagesCache/0000036/t006_r02211_v3.jpg)

Of course that assumes the sky is the backdrop and that it never gets cloudy.  I would guess a light gray would come in at a pretty close second.  If it's trees or structures as a backdrop then black seems the logical choice as that will blend in pretty well.  For a number of years I had an HF vertical for a remote base at my friends' house which was "no outside antennas, period".  It was painted flat black and from the street it was difficult to see even if you knew where it was.  Over time it weathered into a mottled black/gray that made it even harder to notice.  Only so much you can do with a wire antenna other than maybe gray or black wire and gray or black center support.  I think your idea of meeting the opposition halfway is a good strategy.

Mark K5LXP
Albuquerque, NM
 


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 04, 2019, 03:32:36 PM
Well, today, I drove by the neighbor's house and noticed that one vehicle was gone.  Hoping they were both gone, I quickly double parked and made my way along the side of the house to the porch, where I could view my antenna from one of their vantage points.

No sooner did I look over the railing to view the fiberglass pole, than the side kitchen door opened and the husband asked "what was I up to"?  Awkward moment, but when I said something about "just checking things out", he started talking about my "privacy trees" that he had butchered (that hung over his side of the fence-and a whole lot that didn't)....and whether they will recover.

At least I did get some perspective of what they see....and the backdrop for the mast is mostly water and a large redwood tree.  When I add the other section to the mast, I will be painting over the 2 section (longer) white pole, insulator and that side's trap with some light blue/gray and hope for the best.

More epidsodes to come....(at some future date).

Just "shows to go ya" that one can never predict what kind of encounter to expect when "on a mission".


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KB5UZB on January 05, 2019, 10:05:23 AM
Why be clandestine about it? Why not talk to the neighbor and tell them that you want to try to improve their view, but need to get an idea of what's in their way. You should have just walked up & knocked on the door.  ::)


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 05, 2019, 05:35:29 PM
We have already interacted over this issue….to "no avail".  It is going to be a confrontational interaction...."no matter what".

I am willing to go "to the mat".....but trying to find an "acceptable" resolution.

While listening on 75, I just realized that my plasma tv (which I never had problems with on 40 and above).....is making it impossible to hear ANYTHING on 75=with all the spurs.

Is the solutiion  to just get rid of the very clear, acceptable Plasma TV....or find anothe way to expand the coverage???  What if a neighbor also has an offending Plasma tv?.  Shoud I just offer to buy them a new tv.....and eat the cost???

My next inclination, is to just "go balls to the wall"....and endure whatever wrath will come from it all.  I am the one climbing the roof, changing wire lengths, adding traps.....and fighting with the xyl about "conflicts with the neighbors".



Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KB5UZB on January 06, 2019, 10:01:43 AM
I get that I obviously don't know the full story, but being confrontational with neighbors never ends well. Even if you are in the right.

As for your Plasma TV, recycle it ... your power bill will go down - maybe enough to pay for a much nicer set. :D


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 06, 2019, 10:18:30 AM
Two good suggestions.....thanx.  Sometimes, I just can't abide with someone telling me that I can not do something (that I need to do).  I'll try my best to keep the interactions from becoming too volatile.  

I will try to counter offer any objection with something else that will make it more tolerable.
Or.....offer another, more objectionable alternative if what I propose isn't agreeable.
---------------------------------------------------------------

I'll have to research what 50" (+/-) other type tvs put out less rfi in the ham bands (especially on 75 and 40).  

Any suggestions out there???


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KB5UZB on January 06, 2019, 01:01:36 PM
That's really about all you can do. Deep breaths and calm responses. :D

That is a good question and actually what I'm looking forward to least about finally taking my test next weekend & buying an HF rig. :-/ I've accumulated so much in the way of electronics over the years. The high pitch audible noises already bug my partner, I can only imagine what the RFI is like!  :'(


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KJ6ZH on January 06, 2019, 01:13:54 PM
Back when I was in the Marines and living in the Bachelor Officer Quarters, I was able to string up dipoles on the roof of the 2 story building.  I painted the wires using alternating 6" streaks of flat light grey and flat light blue paint similar to the camo pattern on the jets at the air station. Painted the coax the same beige color as the building.  From the ground the wires blended into the sky and the coax looked like the building.  This was my "Stealth" antenna system.  The roof was flat and light grey and it also blended into that when I was working on the antennas so really needed to pay attention!!  

The pole and traps may still be noticeable but at a distance, the visual impact should be reduced.

Ya can only do so much and looks like you are attempting to accommodate the neighbors.

Good Luck

Chris KJ6ZH



Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: K4QM on January 16, 2019, 12:02:35 PM
I'd tell your neighbor to pee up a rope and get over it.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KI7DG on January 18, 2019, 01:44:24 PM
alternating 6" streaks is about the best advice you'll get.  A ham here in town did that with his tower and vertical.  Worked very well.

Chuck
KI7DG


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 19, 2019, 02:48:43 PM
Were those streaks alternating vertically....or horizontally?  On a small FG mast (1 1/2"), they would have to be vertical.

The real problem is that their windows are only about 50' from the antenna.  I am thinking that no matter what I do, they are going to be noticeable.  I just painted the bottom section a "matt gray".  It is off at this time.

Will do the top section (where the dipole ties in) as soon as the xyl is out of town.  Going to install both at only a lower height....with the reserve left as a bargaining chip.  If they complain at the lower level, I will raise to full height.....and then "negotiate" back down. 

I sure do hate this BS.  Trying to keep the peace is like eating excrement.  If it wasn't for trying to keep peace in my household, I wouldn't submit myself to the humiliation of it all.

All gets back to unhappy wife, unhappy life.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: W1BR on January 19, 2019, 02:52:36 PM
Security fence they cannot see over, or tall shrubs.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 19, 2019, 03:08:11 PM
I have both.  My fences are extra high and I have trees growing between us.  Unfortunately, we are on a steep sloping hillside.  Their windows are high enough to look down on my roof and directly out at the dipole antenna.

The water views are the primary concern....although, their bitch is that "they see the antenna".  I have 21 wires that I have in my view of the water.  I pointed that out when the female neighbor came over to talk with my wife.

I took her to view my radio room....said "I have many thousands invested in this hobby.....and I am going to have an antenna in your view.  I am not going to give up".

She brought cookies to thank me for lowering offending antenna (while I was repainting the lower half).  I told her I was going to raise it back up again.  I painted the "missing half" today.  Still have to lower and paint the upper half....and then join them back together.

It has been several weeks since that encounter....waiting to raise the antenna back up until the wife is out of town, so that I can take the brunt of the wrath....without her getting in the way.
Anyone else living with someone for 40 years, might understand my predicament.



Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: KI7DG on January 19, 2019, 06:36:56 PM
RE your question on alternating 6" streaks.  His vertical has no pattern but about 3 colors dare green light green and black.  It sits in his back yard the pattern on the vertical is just random splashes.  His tower sits in his front yard on a main street in town.  He tried to match that part of the tower against the house with the back ground of the house . .  His next door neighbor is an attorney who voiced no complaints and even let him hang part of his horsefence antenna in his trees.  Now that is a neighbor to have.  :)

I will tell you about something about views.  They make a great selling point but after awhile it becomes less noticeable until guests come over.  Put it up and in time it will become less of a problem for her.

 CHUCK
 KI7DG



Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on January 23, 2019, 03:59:50 PM
Well, painted both of the two 1 1/2" FG mast sections matte stone gray and put the joined 19' mast up today (xyl was away).  Had been using just a 9" section on the chimney to support the dipole previously.  Unfortunately, the additional top 10' section is much more flexible that the lower one.  Had to use 2 guy lines and the one that goes through a pulley and to the dipole antenna end to try to keep it straight.

Will be looking for a stiffer top section as time goes bye, so that I can tension up the dipole.  As it now is, I gained a foot or two at the lowest (feedpoint) above the roof, and it now is about 4-5' off the roof.....and both ends rising at about a 30-40 degree angle.

Expected to hear something from the neighbor, but either they weren't home or paying attention, or it is still to come.  Nothing seems to have changed much as far as tuning or swr.  Will have to see if signal reports appear better or the same.
 
Going to let the dust settle, before adding the traps and wire for 75 meters.  If no further repurcussions, I will either find a stiffer top section.....or find a stiffer pole mast so that I can tension the dipole and lift the feedpoint further off of the roof.  Don't want to use metal because the mast is now higher than the power lines, should it come down.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 06, 2019, 08:45:57 AM
Well, so far have not re-encountered the neighbor about the height of the completed two section 19' mast on the chimney.  Have to first replace a top section of tall fence panel between us, before I continue with stirring up the dust.

I'll be trying to raise the height of the center feedpoint which is again, drooping down to it's original height above the roof of about 2-3' .....due to the flexibility of the top fiberglass section--even with guys lines.

Wondering if there are any suggestions about what to try and fit INSIDE the top mast section to stiffen it up.  It is a 10' section with an ID of about 1" to 1 1/4" (have to take it down to find out for sure).

A long section of round wood coat hanger dowel comes to mind.....but I think that it too, would bend over time.  I am thinking of a piece of aluminum pipe to fit inside (it would still be insulated on exterior in case of falling onto electric lines)…..but would prefer something else of less weight.

Any "lightweight", stiff solutions come to mind?  The alternative seems to be to put a pole up at the middle feedpoint again.....but that was the original bitching point.  I'm trying to avoid anything so obvious.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 09, 2019, 12:11:26 PM
Still looking for a lightweight, strong solution to stiffening up the flexible top section.....but think that I might have found an alternative-if none are forthcoming.

Just returned from Home Depot and saw 10' sections of 1' conduit (actually measures about 1 1/8" diameter.  While too heavy for the top section, it would probably fit well inside the 1 1/2" fiberglass section.

Considering turning the entire 19' mast end over end and installing the conduit in what would then be the bottom section....where it would have very little bending if guyed from the top of the top section-since that is pretty stiff.

While not my ideal solution, it should solve the issue until something better comes along.  With the metal conduit providing extra stiffness, the entire mast would, hopefully, be able to withstand the pull of tightening up the dipole-especially if guyed in the opposite direction. 

I should be able to lift the heavy feedpoint and RG-11 further up from the roof and obtain a more level run of the dipole wire to the far tree where it goes.  Anyone see some reason, that I am missing, that this would not work?


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: AE5GT on February 09, 2019, 07:21:16 PM
Were those streaks alternating vertically....or horizontally?  On a small FG mast (1 1/2"), they would have to be vertical.

The real problem is that their windows are only about 50' from the antenna.  I am thinking that no matter what I do, they are going to be noticeable.  I just painted the bottom section a "matt gray".  It is off at this time.

Will do the top section (where the dipole ties in) as soon as the xyl is out of town.  Going to install both at only a lower height....with the reserve left as a bargaining chip.  If they complain at the lower level, I will raise to full height.....and then "negotiate" back down. 

I sure do hate this BS.  Trying to keep the peace is like eating excrement.  If it wasn't for trying to keep peace in my household, I wouldn't submit myself to the humiliation of it all.

All gets back to unhappy wife, unhappy life.



It sounds to me like theres more here than just an antenna problem . It sounds like you have a loyalty issue.  It doesns't sound like the XYL is as concerned about YOUR happiness as you are about hers.

I don't think you'll be happy either way. Either the wife will be unhappy and try to make you unhappy , or you'll be stuck with a wet noodle 15ft off the ground and you still will be unhappy.

I only see three solutions here where you get to stay alive .  Two are going to cost you.

The first two are obvious , divorce and do what want , or sell your stuff and submit.
#3 is (assuming you havent got any restrictions) , put up 70ft of tower with a beam, because its better to unhappy with 15dbi of gain and a low takeoff angle , than to be unhappy with a wet noodle and a takeoff angle thats straight up.

And if anybody sqawks about it its 90ft. And if they dont like that they can move next door.

The truth is it sounds like the three of them are conspiring against you , The cookies are dead give away. They're treating you like dog , when you learn your tricks ...you get a treat. Next they'll want to teach you to roll over and play dead.

 All this stuff about painting when you dont have to its not going to solve anything , you just hiding from the real issue. The only thing thats going to satisfy everybody is you taking it down completely.




I  just dont think your going to be happy at less than 40 ft , even at 40 ft the angle is still not that great on 40 M and difficult to work  EU DX on 80 even with an amp.  If your determined to follow the current course thenI can only offer this as a possible solutionhttps://www.ebay.com/itm/Telescopic-Carbon-Fiber-Fishing-Rod-8M-9M-10M-11M-12M-Portable-Fishing-Pole-Ligh/113222779095?var=413517954001&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3D4f1fc16aba6943d69f701e3e87a88f4a%26pid%3D100005%26rk%3D4%26rkt%3D12%26sd%3D113222779095%26itm%3D413517954001&_trksid=p2047675.c100005.m1851 (https://www.ebay.com/itm/Telescopic-Carbon-Fiber-Fishing-Rod-8M-9M-10M-11M-12M-Portable-Fishing-Pole-Ligh/113222779095?var=413517954001&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20131003132420%26meid%3D4f1fc16aba6943d69f701e3e87a88f4a%26pid%3D100005%26rk%3D4%26rkt%3D12%26sd%3D113222779095%26itm%3D413517954001&_trksid=p2047675.c100005.m1851)  , I would get the 12M  remove the top 2-4 sections , epoxy the other segments in place.

you could go to a vertical but the ground losses with buried radials will suck , but it will get the angle down to something reasonable.

my choice is #3 get what you want while you have enough time on the planet to enjoy it. Otherwise you borrow someone else's station  for DX .










Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 09, 2019, 08:28:08 PM
I love it!!!  Thanx for enlightening me.  You are absolutely right.....screw it and let the dust settle where it may.

Time to "Cowboy Up" and draw the line in the sand (a la The Alamo).

Went up and viewed the antenna situation from their next door neighbor today (house is for sale).

They are correct....the antenna is right in their view.....SORRY ABOUT THAT.

There is no way that I am going to be able to appease them.....so why try.

Except for the ongoing issues with the xyl (which will be hell, as always), guess that I might as well just rig the antenna the best way that will work with what I have available and say
"To hell with all of you".

Feels great after getting that off my chest.....glad the xyl is off to a girlfriends this evening.  Just worried about how I will feel about all this tomorrow.....when the wife returns....wine wears off and I will have to endure  her upcoming wrath..... until I can find a good divorce lawyer.




Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 20, 2019, 08:02:56 PM
Went up on roof today (while the xyl was away) and took down the mast.  Going to try and open up the more flexible section tomorrow, and see if I can fit the conduit inside.  If successful, I will drill out the metal "bottom" fitting so it will once again accept the fiberglass section (after cutting it off to gain access to the inside) and then try to epoxy it back on after trimming the inside and outside pieces flush....to contain the "now stiffer" mast section for remounting on the chimney mount.

If all goes well, I will replace with new, the wires on the dipole (making them longer so pruning will be easier).  Using guy lines on the top section, I am hopeful that the tendency of the mast to bend (while pulling against the opposite end of dipole) will be diminished to the point where I can tension up the antenna and eliminate much of the drooping feedpoint.

Expecting some "input", if the antenna is then able to be raised up close to horizontal.  The saga continues.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: K0ZN on February 20, 2019, 09:29:49 PM
You are in a tough situation. You have my sympathy.  Agree with a previous post: you have two problems. One marital and one with a neighbor.
If your wife thinks removal of the antenna and placating unpleasant neighbors is more important than her husband's happiness and her relationship with him.....that is a bad situation. Cold reality is there is probably nothing you can do to placate you neighbor. I don't know what your local CCR's/covenants and zoning laws are, but you need to know that info down cold. Worst case is your neighbor might sue you for "reducing his property value" or try to sick the zoning inspector on you.....again, why you must have an accurate knowledge of the zoning and real estate documents related to your property and use thereof.  Usually, a good offense is the best defense!!  You may eventually have to make a hard choice or two.....  good luck.

73,  K0ZN


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 21, 2019, 07:42:04 AM
I live in an unincorporated part of the county.  Therefore, there  are no CCR's to deal with.  Time will tell as to the problems with the xyl and the neighbors.

I'm about to go and do the mast modifications this morning.  Hoping to be able to get the mast and antenna back up before "zero hour", sometime this afternoon.

If my attempt to stiffen up the mast works, as I hope it will, I should be able to gain considerably more height above my roof line (where the coax feedpoint is), than the present 2-3'.  This should provide more acceptable performance for my dipole on 40 and hopefully provide access to 75 with the newly acquired traps (that I will be adding if my efforts are successful).

Considering the property site, (facing north on a steep slope), my best direction has always been to the northwest and north.  However, I have been pleasantly surprised by being able to still have fairly good results to the east and "over the hill" to the south.

I will never be able to get the much desired 40' or higher antenna elevation for true dx, but most of my time is on 40 meter nets.... and with the advent of using sdr for reception, I think I will be happy with any improvement gained by my efforts with this antenna compromise.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 21, 2019, 04:09:49 PM
OK!  Cut the bottom fitting off of the fiberglass mast section and found lots of broken brittle plastic pieces inside (that had once acted as reinforcement to strengthen the mast).  It was originally one long piece of plastic consisting of an x shape to help support the mast.  Totally worthless, but after getting all the pieces out, was able to insert the conduit inside and cut it to length.

There was too much play between the 1 1/8" OD conduit and the 1 1/4" ID fiberglass mast.  Managed to find some plastic plumbing pipe that was an almost perfect.  Cut it to length and inserted it into the mast and then the conduit into it.  

Had to grind out the remnants of fiberglass and epoxy inside the bottom metal piece and then put together the whole "new" section.  It is now waiting for another day to put it back up with the additional section screwed on top.  I touched up the scratched paint with the spray can.  

I cut new pieces of wire for the dipole (a bit longer) and just need some new stainless washers for the wing nuts where the wires join the feedpoint fitting and should be ready to hoist it all back up.  I will need to attach the guy lines and hope that the mast is now going to be rigid enough to support the coax and B&W fitting much higher off the roof-(when the dipole ends are tightened back up).

I'm going to spray the coax and fitting with the same flat light gray paint as I hook it all back up.  The only visible difference will be the new bright green covered wire and hopefully a higher center of the dipole.  It should help to make the antenna more horizontal.  I'll probably hear something about the more visible new green covered wire, but, at this point, not going to let it deter my efforts.  If necessary, I'll spray the wire too.

Hopefully, tomorrow I will be able to get it all back up.  If it works well, I will plan to install the traps and additional wires to give me 75 meters at another time.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on February 28, 2019, 03:08:16 PM
Had a week of some pretty good storms and rain, went up on roof today and took down the mast to retie some guy lines and tighten up the chimney bands on the mount.  The conduit inside the flexible mast was very successful in making it rigid, but it did increase the weight significantly.  Since that section is now the lower half, I don't see a problem....except in lifting and trying to keep it upright while trying to get it into the two mounts.
 
I installed two pairs of guy lines--one at where the two sections of mast join, and two at the top.  They tie to the two longer fence posts that I installed for this purpose on the property line.  These will counter the pull of the dipole when tightening it up and should take care of any leaning or bending.  Hopefully, it will enable me to gain some more height at the feedpoint (above the roofline).

Tomorrow, I will tighten up everything and see how successful this attempt will be.  I will still have to change the dipole wires to the longer lengths and trim them to resonance.....then add the traps and the old wire to gain 75 meters.


Title: RE: PAINTING FEEDPOINT JUNCTIONS ON DIPOLE AND SUPPORTING MAST ON CHIMNEY TO "HIDE"
Post by: N6QWP on March 01, 2019, 12:07:32 PM
SUCCESS!!!!!

I added 4 cleats to the fenceposts today and tightened up all the guy lines and also pulled the dipole taught.  I now have the feedpoint about 7 or 8 feet above the roof.  While still not quite horizontal, this is far better than the 2 foot clearance that I had before. 

The mast is almost perpendicular and lines are very tight.  I don't think that the mast is going to bend and sway like it did before.  Going to let it remain this way for the rest of the week (more rain expected) and see how things hold up with the accompanying winds....before I change the wires, tune for resonance on 40.  I will eventually add the traps and wire to access 75....and then be happy if everything holds up.

Persistence is the key to success.  Haven't heard a word from the irked neighbors.....I guess they realize that I am going ahead with my antenna project.  If I hear anything, I will offer them the choice of leaving it as it now is, or putting another long mast up in the middle and making it an inverted vee (and more in their view).

Thanx to all for the inputs and suggestions.  73