Phil Make sure the LO injection to the DBM is where it should be. One thing you can check is the gain of the two grounded gate amplifiers stages, each uses four J310 FET devices in parallel. A long s
Phil I am not sure how to measure the LO injection on the Omni VI DBM. The most common DB Mixers require at least 7dBm, and that would be hard to measure using RF voltages since the diodes are driven
Phil, there are bandpass filters on the LO Mixer board. If the LO signal falls low enough, the DBM losses will increase. The post mixer amp provides a proper impedance terminal for the mixer, and mak
If the PL issues are resolved, I'd fix the radio, or sell it for parts. The Paragon rigs are aging beasts, and even buying another Paragon may mean you end up with TWO parts radios in short order! Bu
Life's lessons: 1: the tiny 100uH ferrite chokes used by TT make great fuses!!! 2: any TT inductor is a candidate for wiggling and eventually fracturing its solder joint at the PCB pad. _____________
However, if you want something that just works, I would suggest an IC-7300 and move on with life. 73 Phil W1PJE Yes, but I'd rather be here trying to fix a thirty year old Ten Ten vs. a IC-7300 in te
Need some advice on selecting a USB adapter to provide a serial port for controlling my Omni VI. The Dell machine I am using allows the RTS line to go high when the port is not in use, so it does not
Buzzing relays sounds like a problem on the processor board. But, I'd reseat all of the connectors associated with the band pass board first. As I recall, that starts on the micoprocessor board, and
Lamp intensity is controlled by the logic board. First thing I would check is to see if the 20 MHz oscillator is generating time base signals on the 7474 divider. Next, I would want to see clock puls
Greg U13 will not cause the problems you are seeing. It phase locks the HFO crystals to the master oscillator. If it is not locking, all that will happen is that rig will be off frequency on that ban
Greg... Maybe I misunderstood the problem. What is working and not working?? You mentioned the front panel controls are working? Is it just the LED frequency display and meter lamps that are out? ___
If anyone has a scrapped Omni VI I need a few odd parts. First I need the four pin Molex power connector that is attached to the rear apron. I could also use the metal shield over the PA assembly and
Carlos It is the same signal path that feeds the RF input to the Ten Tec receiver section. I use mine for my K9AY loop antennas, which have a preamp. The isolation is the same for the TenTec transmit
A birdie told me that Mike is showing the new Omni VII Plus at Hamvention. Street price is $2999 according to rumor. Radio was said to be in production. That might be a bit high compared to imports,
If the same segments are missing on several of the LED displays the suggestion to clean and reseat the board interconnections and related cables will probably solve the problem. Those displays are mu
I see Mike is offering the colored rings for Ten Tec knobs on his website. I was looking for a few more orange rings! Pete _______________________________________________ TenTec mailing list TenTec@c
They were listed the other day on the TenTec site, but now the only place I can find them is where they are listed is by color as options for the new Omni VII. Price is around $17.95. _______________
If the Omni has provisions for an external receive antenna, the first thing I would do is select the external RX antenna, and put an antenna on that RF connector. If the problem clears, then I'd look
I have all of my slots filled with Inrad filters in my main Omni VI Plus rig, and that includes both Inrad roofing filters. To answer directly, I have both 6 and 9 MHz 250-Hz Inrad filters installed.
My guess is you have a bad encoder, or a bad switch on the front panel. If one of the switches controlled by the push buttons remains keyed it will raise an interrupt in the software and through the