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Locked Re: (Slightly) off topic


 

Chris:
My old web site has the schematic for a simple unity gain multicoupler (splitter).
It's very broadband and actually has about 1 dB of gain with 50 Ohm ports.
I tried to keep it simple to avoid active device junction noise.
There's a few dozen out there over the past 15-years and so far the guys haven't complained yet.

The site is old and no longer has a certificate, so it may ask you if you want to proceed.
But, it's safe, there's nothing malicious there.
Look at the bottom of the page, I used 2N3904's but there are quieter xistors, however
none of the receivers have quieter noise floors than the devices, so what's the sense.


And here's a Preselector that incorporates one of the multicouplers..
Look at about 7:30 into the video.


Bob, N1KPR





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Engineering, where enigma meets paradox


On Friday, October 14, 2022 at 03:51:19 AM EDT, John via groups.io <g4ijd@...> wrote:




I use these Minicircuits devices with ?amplification for distribution of my RX system.?

John TA4/G4IJD ?l¨¹den?z beach


On 14 Oct 2022, at 09:44, Steve, G4VBD <stephen.mcadam56@...> wrote:

?Hi Chris
G4AON published a 4 port active distribution amplifier recently.
There is a link on his QSL web page



Regards
Stephen, G4VBD

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