[TenTec] ARGONAUT 515 problem

[rick@dj0ip.de]

Gm Carl,

It's the other way around by me.  I leave it in "Normal" for all bands
except 80m.  On 80 I have to switch to Reverse.  I have owned 4 pyjrt
Argonauts including one other 515 and none of them worked like this.

73 - Rick, DJ0IP
(Nr. Frankfurt, Germany)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
Moreschi
Sent: Monday, September 05, 2016 1:52 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] ARGONAUT 515 problem

Rick,  I think this is normal.  The mixing scheme works such that LSB comes
out as normal on 80 meters.  I seem to recall that my Omni A worked the same
way.  I think they use the same crystal for 20 and 80 meters to get to the
IF and this yields USB on 20 meters and LSB on 80 meters.

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com

On 9/4/2016 10:51 PM, rick at dj0ip.de wrote:
> Meanwhile, back at Ten-Tec . . .
>
>
>
> I have just received an Argonaut 515 in fairly good shape, just 
> needing a tune-up.
>
> However it does have one minor issue which has me stumped.
>
>
>
> On 80m I could hear lots of strong signals but all sounding like 
> Donald Duck.
>
> I switched to SB-R which should normally place the rig in USB mode and 
> everything worked just fine.
>
> On 40m, and all other bands, I switch back to SB-N and everything is fine.
>
>
>
> I haven't checked transmit yet to see if the wrong mode is only 
> selected in RX or if it is also during TX.
>
>
>
> What is curious to me is, the mode switch is labeled for SB-Normal and 
> SB-Reverse, yet the signal input to the SSB generator board for 
> switching these is simply called LSB.
>
>
>
> What I am unable to find is how the position of the bandswitch can 
> pass a signal through the mode switch to tell it when to enable or 
> disable this LSB line.  That must be the source of the problem.
>
>
>
> I believe  this is very similar to the Triton IV so perhaps someone 
> with that radio understands how this works.
>
>
>
> Tnx.
>
>
>
> 73
>
> Rick, DJ0IP
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec at contesting.com
http://lists.contesting.com/mailman/listinfo/tentec