[TenTec] omni D & A & C help

[d.e.warnick at comcast.net]

Mike, 

Here's the url for the AGC mod you want 



http://tentecwiki.org/doku.php?id=omniagc 



You need to log on to tentecwiki.org, select transcievers, then look at the Omni A and Omni D pages there. They will answer many of your questions. 



As for the PTO mod, the front panel's got to come off. That's just the knobs and 4 screws as I recall. Then unsolder 4 wires from the PTO (make a sketch of what colors are where before you remove anything) and take it out. Depending on your mechanical/electronics skills, the mod is less than 3 hours from rig on the bench to the job is done. First time could take a bit longer, but you don't want to rush and make a bigger job of it than it is. Allow yourself a nice Saturday to do it. Try to not force anything with a big tool. You'll just do unnecessary damage 



Dave 

WA3MKB 




----- Original Message ----- 
From: "Mike Bryce" <prosolar at sssnet.com> 
To: TenTec at contesting.com 
Sent: Saturday, March 14, 2009 2:08:47 PM GMT -05:00 US/Canada Eastern 
Subject: [TenTec] omni D & A & C help 

Gang! 

The pile of old Omni's continue to stack up. 

I have several "A" and a "D" or two models. 

I' have heard there is a mod to improve the agc and to keep it from   
popping. Anyone know where that mod maybe hiding? 

One of the rigs has a noise blanker installed, and the life of me I   
can't tell one way or the other if the silly blanker is working or not. 

Is the noise blanker a one size fits all? Or was there a different   
blanker for each version of the OMNI series? 

I have a sales flyer that has a Omni C on the front cover (the version   
has all the WARC bands and the crystal filters are selected with a   
flip switch) and from the photos the noise blanker is quite a bit   
different from the one I have in the "A" version. 
The photo of the insides in the manual shows a model 248 blanker,   
which is visually different from the one I have installed. The blanker   
shown in the flyer and manual seems to have a set of three crystals   
mounted on the lower left side of the pcb assembly. the one I have in   
the radio does not have these crystals. 

anyone have a model 218 1.8k filter for sale, cheap?? 
anyone have a model 248 noise blanker? 


The PTO on the "D" version is so froze up I need a slip lock pliers to   
even try to turn it. A call to TT monday I will order a PTO rebuild kit. 
Do you need to remove the counter assembly before you can reach the   
PTO? Seems to be a bit more than a saturday afternoon project to get   
the PTO out and back in. 

any suggestions? 




Mike, WB8VGE 
SunLight Energy Systems 
The Heathkit Shop 
http://www.theheathkitshop.com/ 
J e e p 
o|||||||o 

A man with one clock knows what time it is. A man with two clocks is   
never sure. 




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