Gidday Hal

Its a function of difficult placement (rented house) and limited stay...
And I havent got one and dont want to make/buy as I am about to move to
another country. grin Also the HF privs are pretty new to me and when
I move I'll lose them!

One day...

Tnxs for your previous comments BTW. So a fullwave length of coax as 4:1
balun 0n 10M will have a minimal effect on the end of feedline Z. I'd
need an antenna that exhibited 50r on 10M and 200r on 20M.

I have been often suspicious of toroidal baluns (loss etc). I might make
one and plug it into the network analyzer at work to test.

Cheers Bob

Subsititute bcnuup for bcnntp if you wish to email direct.




Hal Rosser wrote:
I am not and will not be using a tuner... (in case anyone wants to
suggest it)


So did you tell someone that you would never be caught dead using a turner
once?
c'mon, they ain't all that bad, mate.


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" I have been often suspicious of toroidal baluns (loss etc). I might make
one and plug it into the network analyzer at work to test.

Cheers Bob

For loss: Make 2- connect them back to back for the network analyzer, then
divide the observed loss by 2.

Dale W4OP

Bob Bob wrote:

I have been often suspicious of toroidal baluns (loss etc). I might make
one and plug it into the network analyzer at work to test.

Try it in the real world. That's the best test. I use a 4:1 (feeding a low lop)
for a different reason. It makes my TS870 auto tuner 'happy' and allows
autotuning from 40 thru 10. Coax feed works fine, as does direct (no balun) open
wire feed using an external tuner, but that requires retuning on each band, and
I like to band hop. But my bandswitching laziness is not the point. The point is
that I've tried numerous balun in-out tests on the air and have yet to find
anyone on the other end that could tell a difference. I know there is loss
because the balun does get warm on some bands, but apparently it is not
detectable on the other end - which is what counts in the final analysis. So
don't take these guru's "don't do this/that with a bulun" too seriously. Try it.
If it works, well....it works...

"AaronJ" wrote in message
...
Bob Bob wrote:

I have been often suspicious of toroidal baluns (loss etc). I might make
one and plug it into the network analyzer at work to test.

Try it in the real world. That's the best test. I use a 4:1 (feeding a low
lop)
for a different reason. It makes my TS870 auto tuner 'happy' and allows
autotuning from 40 thru 10. Coax feed works fine, as does direct (no
balun) open
wire feed using an external tuner, but that requires retuning on each
band, and
I like to band hop. But my bandswitching laziness is not the point. The
point is
that I've tried numerous balun in-out tests on the air and have yet to
find
anyone on the other end that could tell a difference. I know there is loss
because the balun does get warm on some bands, but apparently it is not
detectable on the other end - which is what counts in the final analysis.
So
don't take these guru's "don't do this/that with a bulun" too seriously.
Try it.
If it works, well....it works...

There you go - if you let everyone else give you the answers, you'll be
missing one of the fun things of the hobby - experimenting. I played around
with winding baluns a few years ago so I could use 300-ohm line to feed an
antenna 200 feet away. It worked. I put one balun on each end of the run.


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