Coax recomendations
 

Reg Edwards wrote:
To find ALL electrical characteristics and performance of
solid-polyethylene transmission line, use program COAXPAIR, from audio
frequencies to UHF.

Accuracy is of the same order as physical dimensions can be measured.
Use a micrometer to measure inner conductor diameter and diameter over
insulant. Or just guess at it. No need to unwind the cable off the
drum!

In a few seconds, download COAXPAIR from website below and run
immediately.

Have you compared the results to any measurements of real cables?

Roy Lewallen, W7EL

Coax recomendations
 

Reg Edwards wrote:
To find ALL electrical characteristics and performance of
solid-polyethylene transmission line, use program COAXPAIR, from
audio
frequencies to UHF.

Accuracy is of the same order as physical dimensions can be
measured.
============================================

Have you compared the results to any measurements of real cables?

Roy Lewallen, W7EL

============================================

Yes, Roy. Countless times.

Have you any more questions?
----
Reg, G4FGQ

Coax recomendations
 

Reg Edwards wrote:
Reg Edwards wrote:

To find ALL electrical characteristics and performance of
solid-polyethylene transmission line, use program COAXPAIR, from

audio

frequencies to UHF.

Accuracy is of the same order as physical dimensions can be

measured.
============================================


Have you compared the results to any measurements of real cables?

Roy Lewallen, W7EL


============================================

Yes, Roy. Countless times.

Have you any more questions?
----
Reg, G4FGQ

Yes. Where can I buy some of that RG-58 that has only 2.2 dB/100 foot
loss, or RG-213 that has only 0.89 dB loss, at 50 MHz?

Roy Lewallen, W7EL

Coax recomendations
 

On Tue, 13 Dec 2005 00:26:25 -0800, Roy Lewallen
wrote:

Have you compared the results to any measurements of real cables?

Roy Lewallen, W7EL


============================================

Yes, Roy. Countless times.

Have you any more questions?
----
Reg, G4FGQ

Yes. Where can I buy some of that RG-58 that has only 2.2 dB/100 foot
loss, or RG-213 that has only 0.89 dB loss, at 50 MHz?

Roy Lewallen, W7EL

The silence is deafening.

Danny, K6MHE





email: k6mheatarrldotnet
http://www.k6mhe.com/

Coax recomendations
 

Howdy:
I was wondering if, for a long run, instead of running coax for vhf or
uhf, if you could
have your radio up by the antenna, then run some large, but cheep wire to
the head unit
on say a ic-208? Would there be too much loss in D.C., or is there any other
problems
that I don't know about that would make this a really stupid idea, such as
some kind
of timing delay problem?

--

SeeYaa:) Harbin Osteen KG6URO

!sdohtem noitpyrcne devorppa-tnemnrevog troppus I

-

Coax recomendations
 

Harbin Osteen wrote:
Howdy:
I was wondering if, for a long run, instead of running coax for vhf or
uhf, if you could
have your radio up by the antenna, then run some large, but cheep wire to
the head unit
on say a ic-208? Would there be too much loss in D.C., or is there any other
problems
that I don't know about that would make this a really stupid idea, such as
some kind
of timing delay problem?

Locating an amplifier at the antenna is a fairly common
practice both for transmitting and/or receiving.
--
73, Cecil http://www.qsl.net/w5dxp

Coax recomendations
 

Remoting radios is nothing new and quite do-able. Signal line loss
problems depend on the design of the remoting. ie if line drivers are
used, not a problem. If high Z TTL lines then you might have a problem.
Power supply will be a problem. It may be smart to also remote a large
battery for current peaks. Easy to work out...

You may wish to address other issues though like lightning strikes and
weather ingress..

I use to remote a linear amp and preamp with a remote NiCd pack of D
cells. Worked well. RFO was about 70W on 144MHz.

Open wire feeder may also be an option to you.. The line loss would be
lower. You could also make some out of small dia copper pipe and spacers
you size/drill yourself.

Cheers Bob VK2YQA

Harbin Osteen wrote:
Howdy:
I was wondering if, for a long run, instead of running coax for vhf or
uhf, if you could