[TenTec] Agronaut Manual

[geoffrey mendelson]

On May 19, 2010, at 1:05 AM, Jim Vohland wrote:

>
> Thanks so much. The manual for the 505 (which my argo is) does not  
> match the type of dial string I have, but the 509 manual seems to  
> match. I should get it going or so I hope. 73, Jim.



I think the thing that anyone who wants to fix an Argonaut needs to  
keep in mind is that while they are three different models, with  
slightly different looks and features (although the 515 has that  
spiffy paint job and the "blikenlights") they are basically the same  
radio with a continuum of changes and improvements.

At some point in the manufacturing process, TenTec decided to change  
the model number and the official specs and make a formal announcment,  
in other cases, they "just did it". My 509 manual shows a sidetone  
board with two adjustments (tone and level) with the annotation that  
some models a different board with only a level control. I don't know  
if it was an option or a change hidden under the covers.

Another change is the t/r relay, later models use diode switching.

Good luck and 73,

Geoff.
-- 
geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendelson at gmail.com
New word I coined 12/13/09, "Sub-Wikipedia" adj, describing knowledge  
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