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9271  eHam Forums / Amplifiers / QRO CW do I need 1.5kW? on: January 27, 2007, 06:18:04 PM
as an asside, I was working in the 10 m contest last fall from northern Ca, with about 1400 watts, ssb.

I kept getting calls returned  that were what I call ESP calls. These were calls responding to my CQ at such a weak level you needed ESP to work them.

I finally reduced my power out to about 800 watts or so, and  quit getting the very weak calls.  

Bottom line is that at near full power, into a decent antenna (3 ele steppir at 35 feet) they could hear me out farther than I could hear them replying,( most at usually at a barefoot 100 watts). add in a lot of folks don't have a good resonant antenna on 10 meters in this portion of the solar cycle, by lowering my power I reduced the number of folks that could hear me and the average signal was louder over all.

so sometimes, too much signal can be a problem, depending on propagation.
9272  eHam Forums / Amplifiers / Another Tube life type question on: January 27, 2007, 05:57:38 PM
I have a huge box in one of my closets with probbably a dozen 572's, another dozen 811's, a bunch of 6lq6's, 6146's and couple of 12by7's and some 6mj6's and several other similar suitable substitutes.( 6js6c' s ??) and I don't rme=ember what else.

I used to have a bunch of tube radios and amps, like the 101 e, 101ee, swan 350, 3 clipperton L's, a LA 1000 NT, las 811, als 811H, and I yet to replace a tube final in a radio, or any transmitting tube in an amp.

I currently only have 1 radio  ( 101ZD ) that uses the 6146 and one amp ( Alpha87 A) which usses tubes that are around $500 each so I don't see replacing them any time soon. My last tube amp was a Alpha 76 A and I never put a tube in that one either ( 8874') and the gentleman that now owns it is still using those same tubes..


so I would not worry too much about buying spares.  tuned properly and ran at a tad less than absolute max smoke, the tubs will last.  If you do put in new tubes somewhere down the road, I always put them in and let the amp warm up and go into standby and stay there for 3 or 4 hours.  this gives the tubes with "getter" in the envelpoe a chanch to scavange out any remaing air molecules.  then I put it into operate position,  and let it sit with the plate voltage on for another hour or two, with no input.  again gives the getter its best chance to work.

If I have a tube amp in the shack that I am not using often, I will still fire it up in to standby for a half hour once a moth to keep the getter working.  It also helps keep the capacitors formed properly.

there is lots of info about getter on the net, suffice that you give it a chance to work now and then.

9273  eHam Forums / Amplifiers / Another Tube life type question on: January 27, 2007, 05:57:23 PM
I have a huge box in one of my closets with probbably a dozen 572's, another dozen 811's, a bunch of 6lq6's, 6146's and couple of 12by7's and some 6mj6's and several other similar suitable substitutes.( 6js6c' s ??) and I don't rme=ember what else.

I used to have a bunch of tube radios and amps, like the 101 e, 101ee, swan 350, 3 clipperton L's, a LA 1000 NT, las 811, als 811H, and I yet to replace a tube final in a radio, or any transmitting tube in an amp.

I currently only have 1 radio  ( 101ZD ) that uses the 6146 and one amp ( Alpha87 A) which usses tubes that are around $500 each so I don't see replacing them any time soon. My last tube amp was a Alpha 76 A and I never put a tube in that one either ( 8874') and the gentleman that now owns it is still using those same tubes..


so I would not worry too much about buying spares.  tuned properly and ran at a tad less than absolute max smoke, the tubs will last.  If you do put in new tubes somewhere down the road, I always put them in and let the amp warm up and go into standby and stay there for 3 or 4 hours.  this gives the tubes with "getter" in the envelpoe a chanch to scavange out any remaing air molecules.  then I put it into operate position,  and let it sit with the plate voltage on for another hour or two, with no input.  again gives the getter its best chance to work.

If I have a tube amp in the shack that I am not using often, I will still fire it up in to standby for a half hour once a moth to keep the getter working.  It also helps keep the capacitors formed properly.

there is lots of info about getter on the net, suffice that you give it a chance to work now and then.

9274  eHam Forums / Amplifiers / Do you use ALC? on: January 27, 2007, 05:39:14 PM
nope, never, not ever.
9275  eHam Forums / Amplifiers / alpha power on: January 27, 2007, 05:36:42 PM
Yea I agree, I just sold my alpha 76A,


Why did I sell it the truth is that I never used it any more. ....


since I bought my Alpha 87 A...

nice folks, they answer the phone and emails, and are friendly.

I had great luck with them..  
9276  eHam Forums / DXing / Realistic expectations in dxing with this setup on: December 30, 2006, 08:45:04 PM
in a word, Yes you can work lots of dx with that setup.  I have not heard the VU7 this time  with a substantial antenna here and I only worked them once  the day before the earthquake tsaunami hit.  Hopefully I can hear the next bunch. You should realize that the folks in VU and 3B and such are at the antipose for the USA, ( in other words, about away as far as you can get from here) and sometimes you can point in a weird direction and work them...ya neve know.

so do the best you can with what you have.  and read some of the books written by dxers, and you will see the best idea is to get on the air and listen and spin the big knob, and work them when the first get on , befor the pile up, and learn operating habbits of them, and so on.

It is patience and persistance that will do you best.
9277  eHam Forums / DXing / QSL question on: December 30, 2006, 08:32:59 PM
I do some modest contesting and will often send out cards for new countries or new bands ciountries I need and usuall get back about 90 to 95 % of them  I think I am currently at 229 worked and 220 recievd back, so pretty good.  I do send the cards off promptly after the contest, and if USA card send a sase and my card, if Canada or Mexico I send a self adressed envelope and a buck and for the rest of the world I send the self addressed envelope and 2 bucks.

if it is a DXpedition or something unique I will send a 5 dollar bill with a note to donate the excess to the dexpidition.

and then sometimes I will just run a bunch of labels off the logger and send a bunch via the buro, , and get those back some day.....

I used to use IRC's and by special stamps, but now I can send to Mexico or Csanada for 2 stamps ( what ever the letter rate happens to be) and use 3 stamps for the rest of the world.  

I never put a hams call on the envelope, and have had good luck this way.

it works for me, Your Mileage May Vary
9278  eHam Forums / DXing / Check the date on your 4O3T card! on: December 30, 2006, 08:18:42 PM
glad you got one in the mail, mine has not arrived yet..

it will be here when it is, and no sooner..

I learned to not get in a hurry for QSL cards..

tom N6AJR
9279  eHam Forums / Contesting / Setting up a Contest Station??? on: December 30, 2006, 06:51:58 PM
 I would spend my $8,000 this way,

used original orion $2500

2 or 3 element steppir beam ( 6m to 20 m) either $995 or $1400

home brew 40, 80, 160m wires ( 25 bucks for wire)

build an desk to hold it all $400 for cabinets and countertops for a big desk

and buy a decent amp, at least 500 watts, like an als 600 ($800 used 1300 new) 811h ($800 new) or good used amp for 160 to 10 m including warc, that uses cheap tubes ( 300z's or 572's or 811's) or solid state.

solid state is better because you just band switch and don't have to tune the amp, hand in search and pounce.

call it a grand for a good medium amp.

and about $100 + or - for a good logging program,

a couple of hundred bucks for cable, connectors, jumpers etc, voice keyers, key and keyer.

and $700 for a good desk top computer with a flat screen monitor use with the rest of it for contesting.

I have 11 hf rigs and 3 big amps and other antennas ( ma5b , dipole, 5btv, solpers etc) but for contesting I use basicalliy an automatic station.

I use the orion and a computer with a logging program and the 3ele steppir and a gap voyager, a voice keyer a bencher key in the orions keyer, and an alpha 87A.

so I see a spot on the logging program, and click on it , which prefills some of the information, and turns the steppir to that frequency, them moves the radio to that frequency and kicks the amp there too. first dit or word autotunes the amp and I make the contact. tab tab , enter and its in the log and click on another spot.

I usually only run 15 or 20 hours on a 48 hour contest and have what you call a little pistol station, not a big gun by along ways. I usually run 350 to 800 contacts in a contest. I enjoy it.

but you can set your self up a nice station for about $6000 or so and save $2000 for new toys, or perhaps to treat the XYL to a day at the spa.. that will certainly help your station..Smiley
9280  eHam Forums / Contesting / What's the Best Contest Radio (under/over $2,000)? on: December 30, 2006, 06:21:59 PM
I have a few and use the orion for contesting, you can get one used from Ten Tec for about $2200 with a warrenty.

I have the original orion, a 746 pro ( my #2) , a corsair, triton IV, scout, TS 2000, omni d ft 101zd, ft 847 and 2 ft 857'ds.  

I use the orion.

I also agree the antennas are necessary, my best antennas are the 3 ele steppir and a gap voyager that I use mainly with the orion. I have other antennas but these are the ones I contest with. I say  a good antenna and a good radio and a good amp that all work well together with a  logging program. the less time you can spend tuning, the more time you spend on the air.
9281  eHam Forums / Amplifiers / Novices, Technicians & Amplifiers on: December 30, 2006, 06:02:31 PM
another point is the nomenclature folks use, I am an OF and used to run CB ( still do about once a year, then I remember why I left..)

ham amps put out power or watts, cb amps swing, ham amps use tubes and transistors, CB amps use pills... etc.


I find most hams are pretty decent folks, but there are folks that are not nice on ham radio, and folks that are extremely nice. Ham is like the rest of life, good and bad. but don't let some one who yells at you for a mistake, to sour you on radio. it really is a super hobby for a lifetime.

there is so much to do. ssb, fm am, and cw are all good modes, and amatuer tv is fun amd so is psk 31, rtty, hellschreiber, and other digital modes. There is EME, ( moon bounce) and satalites. you can use 5 watts or less or 1500 watts on 2 meter cw. so power is just one aspect. and then there is contesting...Smiley

The best place to spend your money is in antennas. gain from antennas not only gives you a stronger transmitted signal, but a stronger recieved signal as well.

so I have lots of amps and lots of power and still even have stuff that will do 11 meters, but I would rather get on 17 m or 20 m or 160 m and visit with folks on the air.

I have friends all over the world , I will probably never meet face to face, but totally enjoy my visits with them. Jim in south cook, the other Jim in norfolk island, Martii where ever he happens to be and so on.

I have local friends I work on uhf and vhf, and folks on the 40 meter swap net all over the state so I enjoy the radio.

I have amps on 6 and 2 m that do 400 watts, and an alpha 87a, als600 and ic2-kl for my day to day hf toys.

the alpha will probably do wellover 2000 watts but I find that I usually run it at about 1000 watts. with my antennas if I use more power, I end up making a ton of "esp" contacts, that being folks running qrp or 100 watts, and me reaching them loudly and them coming back at the noise level.

so a little less power makes it not so good of a signal, and I get stronger answers to my calls. In case of dx I can run it up to legal limit if needed.


go to ARRL.ORG and in the upper left click on exams, type in your zip code and hit enter. this will bring up a list of ham tests in your local area. most of these are sponsered by a ham club. they all have a contact person and phone number. call and ask about the next meeting, for an elmer , how do I ....

some one will take you under their wing. Please gice it a shot, and also try to learn the code (CW) its a great mode (G4FON.net is a good site) and you can do ham radio for your entire life. it is a good service to be in.

here is a link to my pile of stuff.

http://hometown.aol.com/catfishtwo/N6AJR.html
9282  eHam Forums / Amplifiers / At least one bad 572B in Clipperton on: December 29, 2006, 11:53:02 PM
Ameritron sells 572's for $60 each, and probably it wont hurt to run 1 new one with the 3 old ones, especially if you don't run it at max smoke.

I always tuned my clippertons up to max output, check the dip, the dropped the input power a couple of watts.  I ran a big assortment of tubes in several, for quite some time and never had a problem. I now run an alpha 87a, I enjoy the no tuning, but I really enjoy not hearing the big Clang when ever you keyed the clipperton L
9283  eHam Forums / Amplifiers / True or False..?? on: December 29, 2006, 11:38:45 PM
you won't get any more power as the high voltage is 1600 volts in the 811 and 811 h and I think the 572 amp runs at 2200 volts.  by the way a set of 811's ( 3 of them) is $60 from ameritron, and 1 572 b is $60 from ameritron.  so 3 sets of 811 will cost the same as 1 set of 572's.

I have yet to wear out a tube befor I sold the amp. I still have a dozen or so 811's and the same  for 572's and even 6146's and 6lq6's that I bought for backup for different amps in the past, and never needed. they are in a box in the closet.

some folks say the 572's last longer, but I have never seen anything to prove it one way or another.  but save your money, run 811's and realize that a few watts for the last bit of smoke in your amp means nothing.

have a friend with an amp call you on the air and listen to his signal at 800 watts, then have him drop it to 700 watts, you can't hear the difference. if he drops it from 800 to maybe 350 or 400 watts you "might" notice the difference.


 The point is tune your amp for max output then drop the input a couple of watts and your tubes will last for ever.   going for every last bit of smoke all the time just makes the tubes run hot and splatter your signal all over the bands.and you can't hear the difference in a few watts.
9284  eHam Forums / Amplifiers / QEX article: MOSFET PA with ARF1500, kit or pcb on: December 29, 2006, 11:28:32 PM
also the folks at elecraft are comming out with  an 800 watt and a legal limit amp sometime in 2007, they are in FCC cert now. they will also be sold in kit form, so says the literature.around $5000 for the big guy
9285  eHam Forums / Amplifiers / SB-200 output? on: December 29, 2006, 11:23:10 PM
I always tune up in cw or fm.  On side band if you don't make a noise, there is no output. ( no carrier in SSB) so the best you can do is helllllllloooooooo or a whistle.

this will allow the meter to catch up with the signal being produced and give you a more accurate reading.

also most amps will dip the plate and peak the load at the max output of the amp.  In other words I tune for max output and then check the dip and tweek the plate to be sure I am ok.

 I also back the power down by a couple watts of input, and then the tubes last for ever.  When you have to pay $500 to $600 per tube, you get careful..any how, you need to tune up in a mode ( cw, fm or some rigs have a tune mode) that produces a carrier.

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