[Elecraft] Dual Receivers 2 different antennas Diversity receive

[Conrad PA5Y]

If you want to be absolutely certain you could add an external relay driven from the key output. If you use this port to key you PA then you can just use a Y splitter. There are hundreds of suitable relays on eBay. Configure so that on TX the sub RX is terminated with 50 ohms. Typically relays such as Dow Key 401 series will give well over 100dB isolation on HF through 6m, they say 85dB but it's a lot more on all the ones I have measured.

For example

https://www.ebay.com/itm/Dow-Key-401-175-RF-Microwave-Switch-15V-SMA-NSN-5985-01-320-1388/143186092545

Regards

Conrad PA5Y


-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of VernonJ
Sent: 28 January 2020 20:28
To: elecraft at mailman.qth.net
Subject: [Elecraft] Dual Receivers 2 different antennas Diversity receive

My K3S has Main and Sub receivers. I would like to use Diversity receive with the Main using the transmit antenna, and my Sub using a small receive loop.
Is there sufficient isolation on the Receive Only antenna connection to protect the Sub? Antennas are 60 feet apart, and I intend to run 500 watts at some point. If I need additional isolation and protection, how would I do this? Thanks.



--
Sent from: http://elecraft.365791.n2.nabble.com/
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message delivered to g0ruz at g0ruz.com