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 t
Hi Pete, I'm thinking if your 350 foot feedline is coax and your antenna output is very low it will be even lower at the shack end before it meets the preamp. I think I would put mine at the antenna
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 p
-- 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
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 responden
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 an
That is a very misleading statement typical of all revisions and corrections to that book. Any loss before the first active device will degrade the MDS, noise figure, SNR, or whatever else you wish t
This advice is spot on and something I have advocated for years. Transformer coupling is the only way to go for feedline isolation. Unfortunately, many hams want to use a common mode choke because th
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