I made a fairly comprehensive list of Ten-Tec filter model numbers, stock numbers, bandwidths, etc. It has been posted on a website. Using only my phone it's too hard for me to find. If you don't fin
Depends on what test equipment is available.I suggest you adjust the filter by itself at low power levels, the kind that come out of a signal generator, not the output of the radio's driver board It
The MAX 7219 chips on the LED DISPLAY DRIVER BOARD appear to be available from Mouser. Please excuse if you have already changed those. Seems like a failure there could be the cause. DE N6KB ________
Hi Jim, You're right about being able to use the N-1 and N-2 functions when you put optional filters in those two slots on the 9 MHz IF board. One thing to remember is that filters in 9 MHz IF do not
Hi Barry, Unlike many PLL based radios, not all of the oscillators are locked to one common frequency reference in a Ten-Tec Omni VI. The band selecting oscillators and the VFO are locked to the 20 M
I have a schematic for my 9420. Not sure if I have more than a schematic. It is in the Hercules II manual. That may be the place to look for info on the 9420. I'll take a look at mine and tell you mo
Looked in My Hercules II book and found a complete manual for the 9420 power supply. If you still haven't found the information you need I can probably help you.. ____________________________________
There are two potentiometers that will have an effect on the forward power indicating bar graph calibration. R1 and R4. I recommend that you do not mess with R1 (without some more information) becaus
I'm responding with questions, contrary to your request, but hopefully helpful. Have you unplugged used DeOxit to clean, and replugged all the connectors? Have you tried reflowing any of the solder j
Hi Jim, I don't know how long you have owned and used the Omni VI. If it is new to you, you may not be completely familiar with the interaction of the PBT adjustment and use of narrow filters in both
Would not running the 9420 from 240 VAC eliminate the problem of mains voltage going high in the case of failed neutral wire? I find that mine runs better on 240 VAC than 120 VAC, even though I have
What about RX function in LSB mode? In Omni VI CW RX is LSB and CW and LSB use the same crystal in the BFO. Failed crystal perhaps? DE N6KB _______________________________________________ TenTec mail
Ken suggested checking receive function in LSB (not USB) because LSB receive is the same as CW receive, using the same BFO frequency, same BFO crystal. _______________________________________________
I love the Omni VI and have two of them myself. I am a competent troubleshooter of electronics having worked as a technician and engineer on radio communications equipment, radioastronomical instrume
If you really mean 0.22 Hz you should consider yourself fortunate and not mess with it. If it is 0.22 kHz off you can make it better, but not much. I agree with Bob that you should check it on all ba
Hi Wes, How can I find that frequency adjust in the Omni VI software menu? Thanks, Ken N6KB _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.cont
I know of the sidetone adjustment, but that's all. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
Hi Dale, The Omni VI frequency calibration is dependent on a 20 MHz reference oscillator and the BFO oscillators. The BFO operates at several different frequencies depending on mode of operation and
Hi all, Bob said "Most ham radios are reasonably accurate but resolving less than 100 Hz is based on many variables and assumptions. Even the number of digits in the software calculations are truncat