[TenTec] Omni 6 Plus: No RX or TX on 10 meters (Intermittent)

[k8mp at aol.com]

 It appears to be fixed and in repairing it, I fixed another annoying problem, which was spurs and floaters on ten meters only. Those had been plaguing me for several years.


First, thanks to Paul at Ten Tec for pointing me in the right direction and to Mark, K8VF, and others for their suggestions.


Paul was right. The problem was on the Xtal Osc/LO board. The repair process went like this:


1) I looked at the schematic of the board and saw there are 4 separate xtal
? ? oscillators for ten meters (I assume one for each 500 Khz band segment)
? ? Since I was losing the entire band, I knew it wasn't one of those circuits.?
? ? That eliminated a lot of circuitry as a possible cause.


2) After reading the theory of operation, I pretty much narrowed things down ? ? to the L9, L10, and L11 circuits, plus the Q4 and Q5 circuits.


3) I resoldered every component in those areas and voila, no more spurs or
? ? floaters and so far, RX and TX are fine. (I'm fairly certain the rig would
? ? have failed?by?now)


Later, Joe