Groping into my blurred memory, I think the benefit of having similar bandwidth filters (e.g 400hz, 2.7Khz or 2.1 KHz) in the main and sub receiver is diversity reception but I’m not sure.
"Matched" filters were required for optimal diversity operation with the *original* synthesizer. With the new synthesizer in the K3S, that requirement has been relaxed.
Does it matter if I installed either of these single filters on the
> main or sub rx? No. For example, I have 13 KHz (FM), 2.8, 1.8, 500 (8 pole) and 200 Hz in my main with 2.8 and 500 (8 pole) in my sub rx. Since I have the new synthesizer, I can use matched filters for Diversity or select a tighter filter in the main RX and continue to use a wider view in the right ear (sub rx). From a DX (split) perspective, I can use a narrow filter in the main (for the DX) and the wider filter in the Sub RX for "listening in the pile-up". If you are one that likes to park the Sub RX on the DX station and "lock" VFO B, then transmit on VFO A ("split off") and tune around the pile-up, you may want to put the narrow filters in the Sub RX. 73, ... Joe, W4TV On 2021-07-05 3:30 PM, PAUL GACEK via Elecraft wrote:
Simple question: Can I mix and match different filters between the main and sub receiver. If yes, what am I giving up? Groping into my blurred memory, I think the benefit of having similar bandwidth filters (e.g 400hz, 2.7Khz or 2.1 KHz) in the main and sub receiver is diversity reception but I’m not sure. In my project to install a KRX3/KSYN3A into a K3s, I have a pair of 2.7Khz filters and a pair of 400Hz filters. Separately, I have a variety of single filters such as a 250 Hz and 1.8Khz. Does it matter if I installed either of these single filters on the main or sub rx? Paul Gacek W6PNG/M0SNA www.nomadic.blog
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