Another shot in the dark: The Tcxo adjustment trimmer. When I was aligning my O2 I noticed that the trimmer on the Tcxo was very sensitive and wanted to jump around a lot. There is an alignment proce
Panel is fine. My only complaint is that the Auxiliary audio has neutral on the rear requires more drive than my USB sound device can produce (US Navigator). I had to insert an audio amp in line to g
The engineers at Collins knew the value and need for good receiver Preselectors when they designed the R-390 family in the 50's and 60's. A bank of tuned circuits mechanically track received frequenc
Does this processor fail often? If so I wonder what the failure mode is? Thermal? Other? Would a heatsink help? Jim n4be To subscribe or unsubscribe via the World Wide Web, visit http:/
I had a failure of a couple of ICs in my Centurion a few years ago. I could only guess that it was some kind of power line transient. Replaced them and that fixed it. But we live in a lightning prone
John, Don't forget the military/commercial market, which is typically big$. There are several mfgrs of commercial radios (Icom being one) that have built in support for data modes such as ALE and Mil
Sorry to see TenTec (not Ten Tech as spelled in the new owner's apparent announcement inserts) on the roller coaster. I love my O2. Hopefully the new owner understands and appreciates advanced archit
I suspect this has already been hashed over in the past, but I need some guidance. I use the TCXO calbration procedure found on the wiki, i.e. use SubRx, tune to WWV, adjust TCXO for same tone on US
Hi Ron, I thought I was following your procedure but it's still off at each end of the HF spectrum. I know it's probably within the advertised specs but it just seems excessive. Below are the O2 freq
Well, who would have thought? I did a master reset and ram clear, then recalibrated to 10 Mhz wwv as described in the procedures. Now tuned frequencies appear to be exact on other bands/frequencies
Reading the discussion of OCF with great interest. Currently running an Orion 2 and Centurion amp. Also have various other rigs, one Harris RT-1446 for MARS use with matching 500W amp and auto tuner.
The USB mode selection suddenly stopped working. I can go into any other mode but when I try to go back to USB it does nothing. Did clear and reset, even loaded an earlier firmware version, nothing.
Tnx for the ideas. The button also doesn't appear to do anything with ATTN or with the TX sub option under MENU. All other buttons seem ok. I removed the front panel and reseated connectors but no jo
Finally loaded up the latest version 3. Very nice, audio and agc are very smooth. Haven't used it enough to comment further except to say I really miss the little tuning dot above the spectrum displa