Topband: Voltage along coax feeder

Carl km1h at
Wed Mar 27 11:31:39 EDT 2013

Check the Ameritron RCS-4 circuit. Selects 4 antennas with voltages over the 
coax. Requires relays with excellent isolation for Beverages, the RCS-4 is 
poor and I eventually built my own with DIP size microwave relays. No 
problem with intermittent contacts or lightning....yet.


----- Original Message ----- 
From: "David Cole" <g3rcq at>
To: <topband at>
Sent: Tuesday, March 26, 2013 4:48 PM
Subject: Topband: Voltage along coax feeder

Could anyone please point me in the direction of a circuit to feed +12 -12 
and AC along the feeder to my beverages to switch 3 relays - thanks all from 
Dave in the UK
All good topband ops know fine whiskey is a daylight beverage.
Topband Reflector

No virus found in this message.
Checked by AVG -
Version: 10.0.1430 / Virus Database: 2641/5706 - Release Date: 03/26/13

More information about the Topband mailing list