Tnx Tree , I plan to do just that using my AIM 4170 . May be a day or
so, have suitcase company on the way
Ed N5DG
On 9/28/2016 1:09 PM, Tree wrote:
One easy thing you can do to test your transformer is to put a 75 ohm
resistor on the proper side - and then use an SWR meter to measure the
im
One easy thing you can do to test your transformer is to put a 75 ohm
resistor on the proper side - and then use an SWR meter to measure the
impedance on the 50 ohm side. I like to also see how high in frequency I
can go before the SWR starts to rise. Most of the transformers I wind
typically wor
Hi all,
I have a DXE feedline choke thats been sitting in my parts box for years
and I thought Id install it on my Beverage feedline. The antenna is about
530-feet long, dual wire, dual direction. I use it mostly on 160 and 80,
though it works to some extent on 40 and 20.
Im not clear on
Thanks all for your wisdom . Some say not needed and some say to use the
75 / 50 transformer . I figure it's easy enuf to do . So now I'll try it
and see for my self .
Thanks again, Ed N5DG
On 9/27/2016 10:35 PM, Ed Stallman wrote:
My receive antenna is 75 Ohm RG6 connected to my radio and I
Unless the coax is acting as a delay line, in which case the phase shift is only
as predicted when the line is properly terminated, the mismatch is trivial. The
radio probably isn't a good match anyway.
On 9/28/2016 7:47 AM, Tree wrote:
I suppose I need to ask if worrying about impedance at th
Very sad news, indeed. When I first became interested in 160m as ZS5K
back in 1997, Jo was my first ever contact on the band. He put a
cracking signal into Durban.
Condolences to Jo's family.
73, Greg ZL3IX (ex ZS5K)
On 2016-09-29 05:02 a.m., Preston Smith wrote:
Very sad news, following fro
Actually there is a reason or two to match the feedline impedances when
using these active antennas.
There are amplifiers in most of these systems that rely on their matched
impedances to produce their best IMD capability. It may not matter in some
areas of the world but in others with high
Very sad news, following from Joz, YD1JZ.
Pres/N6SS
-Original Message-
From: yd1jz@gmail.com
Sent: Wed, 28 Sep 2016 22:22:26 +0700
To: n...@inbox.com
Subject: YC0LOW SK
Hello OM Pres,
Hope you are doing fine.
Would like to inform that our dear friend OM Jo - YC0LOW has passed away
To Tree's point: have the Hi-Z Triangular Array and use it with the 75/50
transformer.
After using it for a year or so, and just for curiosity sake I pulled out the
transformer and hooked the 75 ohm cable directly to the receiver input. I went
back and forth multiple times and my ears never n
Hi Grant,
Regarding your comment about the isolation transformer
properties of a transformer wound on a binocular core (or on
a toroidal core), their common mode choking performance is
very inferior to common mode chokes such as those
documented by K9YC.
http://audiosystemsgroup.com/RFI-H
I suppose I need to ask if worrying about impedance at this point in the
system is really worth the trouble.
Once signals have gone through one or two stages of amplification - would a
loss of a db or so in signal strength really matter?
Tree N6TR
On Tue, Sep 27, 2016 at 8:46 PM, Lee STRAHAN wr
One thing that W8JI clarified for me in winding binocular cores is what
is a "turn". Normally, a wire thru a toroid hole is a "turn". A
binocular core is two toroids in a single piece of ferrite. Tom
proposed calling a wire in one side of a binocular core a "pass" and
thru both sides a "turn"
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