At 11/27/2006 12:26 PM, you wrote: > > Hi guys, > > > > Built a link radio out of a MASTR II mobile a while back. > > 444.575 TX, > > 447.575 RX. > >It's the LO multiplier chain that you're hearing. 145.460 * 3 + 11.2 = >447.580 (447.575). > > > After having the link installed in my basement for a few days, I > > realized that it's throwing a fairly strong dead carrier on VHF at > > 145.460 or thereabouts, but ONLY when it's sitting idle in Receive. > > When the radio is transmitting the carrier generated by the receiver > > disappears. > >You don't hear it when the radio is TXing because the T/R relay >disconnects the receiver from the antenna.
Not quite, as 145 MHz will never make it through the UHF helicals. It's just leaking out of the RX & case. Neil's got the easiest solution: order a high-side LO xtal for your 447.575 RX. Bob NO6B
