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[Articles Home]  [Add Article]  

Alpha-Delta DX-B on 60 Meters

from John VE3KKQ on July 8, 2017
View comments about this article!

A short article/story...

Setup;
Tower 40ft high, Mosley TA-54-XLNw/40m dipole at 41ft and A-D DX-B.

Experiment;
What results would be obtained by shorting the 40m coil. So, I shorted the 40m coil and using my Rig Expert AA-230 analyzer did an SWR scan.

Caution;
These results are for my installation only, your situation may reflect mine or it may not.

Results;
From the lowest SSB freq. channel to the highest SSB freq. channel on 60m, the HIGHEST SWR indicated, 1.31:1.

Now, go out and play with your DX-B.
Someone could try this on a DX-A, it would be interesting.

Member Comments:
This article has expired. No more comments may be added.
 
Alpha-Delta DX-B on 60 Meters  
by N6JSX on July 9, 2017 Mail this to a friend!
You presume that your readers know this antenna well as this article lacks much.

ALPHA DELTA DX-B is a 160-80-40-30 Meter sloper antenna.

Everything on this antenna relates to the performance of each band so when you change one item it affects the others bands. But yet you want us to ASSume by omission that messing only with the 40m coil/trap did not affect any of the other bands? Highly improbable.

List by band edges/center the measured VSWR's for your modified antenna, then we can see the full picture of your magic.

Or did you make this antenna into a monoband (not directly stated in the article)? You wasted all the other bands to make this into a 60m mono antenna?

How much did you shorten the 40m coil - physical dimensions & wire length/turns removed??? Here is where a picture before-&-after is necessary if you ever expect anyone to follow your lead.
 
RE: Alpha-Delta DX-B on 60 Meters  
by WD9IDV on July 9, 2017 Mail this to a friend!
So much negativity on the internet is getting tiring.
The internet trolls/police seem to be everwhere.
How about some positve reinforcement and the thought that at least someone tried an experiment with the antenna.
 
RE: Alpha-Delta DX-B on 60 Meters  
by K7CB on July 9, 2017 Mail this to a friend!
N6JSX - I get your point. However, the way you said it leaves a little to be desired - such as your use of "ASSume". There's actually a bit of irony in that.
 
RE: Alpha-Delta DX-B on 60 Meters  
by N6JSX on July 9, 2017 Mail this to a friend!
Actually, your absolutely right my grievance is with eHAM in NOT working with this fledgling author. eHAM should have kicked it back asking for more data/pictures.

Or is eHAM willing to post an incomplete technical article just to increase the site hit-counter knowing it will create controversy, bating for replies/hits? As HAMs are never opinionated and the eHAM arm-chair guru's have yet to opine on this article!

Are these posting only to keep the hit-counter clicking, can we not expect some eHAM editorial self-policing or helping new first-time authors?

Also if you check I've posted many DIY/technical article and I've been slammed for my misses/opinions, even though many did not consider it a miss. It is the price you pay when you post on eHAM - wear armor! And NO eHAM has never kicked back any of my articles even though early on they should have.
 
Alpha-Delta DX-B on 60 Meters  
by VE3WGO on July 9, 2017 Mail this to a friend!
It is very clear to me... the OP was trying to see if operation on the 60m band can be added by shorting the inductor.

No need to get all indignant about a ham-style experiment. It was even written in simple, easy to understand English.

And certainly don't expect eHam to frown upon experimentation, because if it does, I'm no longer going to be a paying member.

Anyway, it's interesting to see that 60m can be added to a non-60m antenna. Remove the short when you want to operate one of the other bands.

Thanks John.

73, Ed VE3WGO
 
RE: Alpha-Delta DX-B on 60 Meters  
by K1BXI on July 10, 2017 Mail this to a friend!
Perhaps the author will reply with a bit more information. Such as how many turns did he short
out and what happened to the VSWR curves on the other bands.

John...K1BXI

 
RE: Alpha-Delta DX-B on 60 Meters  
by K1BXI on July 10, 2017 Mail this to a friend!
After re-reading the op's article... (which i should have done first!).... it seems he elimated the 40 meter coil by completely shorting it out.

Very interesting..........

John...K1BXI
 
Alpha-Delta DX-B on 60 Meters  
by AJ4DW on July 11, 2017 Mail this to a friend!
Nice experiment, and you got 60 meters out of this non-60m antenna! I liked it.

I'd be interested in knowing if you're going to use it that way? Regularly or intermittently? Did it affect the other bands on that antenna?
 
RE: Alpha-Delta DX-B on 60 Meters  
by K2JVI on July 11, 2017 Mail this to a friend!
Hey no need for anyone to get all worked up. The OP is practicing what I find(and hopefully others find as well) as one of the best things about this hobby-try it and see what happens. That's how I built my current HF antenna about 8 years ago and its been working great since. Or if any of you remember a previous slogan from a well known athletic apparel company, "Just Do It"

73'
Bob.
 
Alpha-Delta DX-B on 60 Meters  
by HA7WX on July 13, 2017 Mail this to a friend!
A small article is better than none.
A good HAM will experiment with what he has readily available.
Actually, N6JSX's ASS should have been kicked away from eHam with a moderator deleting his post, what an awful behavior, i can imagine that kind of guy in his everyday life...
Just saying.
73, HA7WX Chris
 
RE: Alpha-Delta DX-B on 60 Meters  
by VE3TMT on July 14, 2017 Mail this to a friend!
For the amount of time I spend on 60m, which is virtually zero, my DX-B already tunes there.
 
RE: Alpha-Delta DX-B on 60 Meters  
by WY4J on July 16, 2017 Mail this to a friend!
Wow, some of your guys are nasty! Not a very good example for those thinking about joining our wonderful hobby.

Besides, it seems as with any bully, they are rude and tough when they can hide behind a wall, car, microphone or a computer but I be you would not be so tough if we where face to face.

If you have nothing nice to say then, don't say anything at all.
 
RE: Alpha-Delta DX-B on 60 Meters  
by WY4J on July 16, 2017 Mail this to a friend!
Wow, some of your guys are nasty! Not a very good example for those thinking about joining our wonderful hobby.

Besides, it seems as with any bully, they are rude and tough when they can hide behind a wall, car, microphone or a computer but I be you would not be so tough if you where face to face with the person you have insulted as all bullies are cowards.

If you have nothing nice to say then, don't say anything at all.
 
Alpha-Delta DX-B on 60 Meters  
by K3FHP on July 18, 2017 Mail this to a friend!
Just wondering what the swr was before anything was shorted? Could your tuner bring it down to <2:1? What do you think the difference will be at the other end, shorted or unshorted?? Inquiring minds would like to know.
 
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