Rodger, I built several of them for my station as same as for our local contest club station and all works like champ. (Martin's version)
State nr. 1 QSK T/R is floating Re1 - closed Re2 - open Re3 - open In this case ANT port is connected to RX input port and AMP port is floating. State T/R is grounded Re1 - open Re2 - closed Re3 - closed In this case ANT port is floating, RX input port is grounded and AMP port is grounded too. Hope it helps. 73 - Petr, ok1rp On Fri, May 30, 2014, at 09:50 AM, rodger bryce wrote: > > > From: [email protected] > To: [email protected] > Subject: Front End Saver for Top Band > Date: Thu, 29 May 2014 18:45:14 +0000 > > > > > Has anyone built the front end saver by KD9SV or the OK1RR version which > uses 12 volt reed relays. > > I am attempting to build the 12v version on veroboard and have the > following query, when the unit is supplied with 12v relays 1 & 2 are > energised, when the PTT is operated relays 2 & 3 are energised basically > relay 2 remains energised at all times, is this the correct sequence of > operation? > > thanks Rodger/GM3JOB > > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
