I bought a used OMNI Vl and need to tweak the carrier balance on the TX Audio board (81597/92842) This is done using R3 ac balance and R4 dc balance. I have DVM and a Textronix scope, but no panadapt
Re: Omni Vl plus carrier null Thanks, fellows for passing along a procedure to null my SSB carrier. The DC balance trimmer needed to be tweaked. I now have zero RF present on the old Heathkit dummy l
Does anyone have a schematic for a T-T Omni VI Model 563 IF/AF assembly? My instruction book includes production pcb 81602. My transceiver has pcb 81597, 92842 Rev. C. Thanks & Merry Christmas, Greg,
Repeat problem on my Omni VI, Model 563 -- no digital display. First repair: No digital display or digital LED functions. No clock or data on uP pins 7 & 8. I replaced uP with gold plated quality soc
(Peter Bertini) Hi Peter, Thanks so much for your troubleshooting suggestions. U12 74HC74 working. Pin 5 = 5Mhz output & pin 9 = 10Mhz output U13 MC145170 (PLL) some odd things happening. Digital pul
Hi Pete, Thanks for your latest suggestions. I verified the uP is running looking at the ALE (pin 30), running at approx. 3.24 Mhz. Vcc is 5.3 Vdc. Since all the front panel switches function, I assu
Hi Pete, Only the 7-segment displays are not working. No output data on (uP P1-7) and on clock uP P1-6) are present from the uP to the two 7-segment display drivers from the 5-pin connector. However,
Back again Pete, I've eliminated the PLL pcb pulling down the uP data and clock outputs. No difference with all new electrolytic caps. I unplugged the 7-segment display driver cable connector and PLL
Ron, Please contact me by e-mail listed on QRZ regarding your interest on a TM-261. I have two units boxed in original packaging in mint condition. Best, Greg W2GLS __________________________________
I have a mint Century 22 and need to find a source to procure a replacement elastic dial cord. Thanks, Greg W2GLS _______________________________________________ TenTec mailing list TenTec@contesting