Thanks, everyone, for too many good inputs to list here. A lot of good
ideas, both for experimental approaches and for the final
configuration. At least for experimental purposes, I will go with the
preamp in the shack and, assuming that my feedline is not quiet,
significant improvements in m
Guy Olinger K2AV wrote:
> I am getting comments from people who have installed FCP plus isolation
> transformer 160 TX antennas, how their new TX antenna is quieter than
> their
> K9AY or pennant, maybe a third or half of respondents (!!!) with some hint
> or outright statement of this. But I thin
- Original Message -
From: "Don Kirk"
To: ;
Sent: Friday, January 20, 2012 12:08 PM
Subject: Re: Topband: Where to place a preamp? Switching Beverages?
>
>
> N4ZR said : I have a 20 dB ARR preamp", "My choice is whether to put it at
I feed my normal Beverages with 320' of RG-58. and sometimes (at other
locations) feed a Beverage with a shorter cable. Never ever have I been
able to pull the antenna from the transformer between antenna and coax
and have quietness in the receiver. Always there is too much pickup
from AM BC
I am getting comments from people who have installed FCP plus isolation
transformer 160 TX antennas, how their new TX antenna is quieter than their
K9AY or pennant, maybe a third or half of respondents (!!!) with some hint
or outright statement of this. But I think, rather than the TX antenna
bein
N4ZR said : I have a 20 dB ARR preamp", "My choice is whether to put it at the
antenna end, incurring the added complexity of sending 12V DC to it via the
coax, or to put it in the shack."
Per the ON4UN book, "In most cases you can put the preamplifier
Hi Pete,
The common mode issue doesn't really affect your decision. You will
need to ensure that common mode pickup on the coax doesn't get into the
antenna, which ever position you choose for your preamp. This is really
important for low output antennas like the Pennant
The decision on whet
On Fri, 2012-01-20 at 10:53 -0500, Pete Smith N4ZR wrote:
> Having totally struck out raising this topic on Towertalk, I'm bringing
> it here in the hopes of getting some solid advice.
>
> I have a 20 dB ARR preamp of the type praised by ON4UN in his book. I
> want to use it with a variety of R
Having totally struck out raising this topic on Towertalk, I'm bringing
it here in the hopes of getting some solid advice.
I have a 20 dB ARR preamp of the type praised by ON4UN in his book. I
want to use it with a variety of RX antennas - loops, BOGs, etc. - that
have very low output levels.
