[TenTec] Fw: Argosy 525 offset for CW ...issues

[Mike Hyder -N4NT-]

There was a mistake in the Argosy manual about aligning the carrier 
oscillator frequencies.  In my 525D manual for the Argosy II on page 3-18 in 
the section "Carrier Oscillator Alignment" step 4.) is incorrect.  It ought 
to read as follows:

4.) Set the MODE switch to SB-N and adjust C3 for a frequency of 9.00000 
MHz.

(Note that the original text "...adjust C2..." is incorrect.)  I believe 
this may well account for the problem you are having with your offset tuning 
control.

Free but unrelated advice:  There is a 9MHz trap in that rig.  Unless the 
sun comes up in the West, don't mess with it!!

Again, please advise your success or lack thereof.

73, Mike N4NT

----- Original Message ----- 
From: "scott sheppard" <scottsheppard at videotron.ca>
To: "Mike Hyder -N4NT-" <Mike_N4NT at charter.net>
Sent: Saturday, November 13, 2010 3:01 PM
Subject: Re: [TenTec] Argosy 525 offset for CW ...issues


> hi Mike
>
> Well, after playing with that POT it did work--bbut only for a given
> sideband--ie, cw could be zeroed in for 80. 40 but the usb side was off by
> double that. As well, all side bands were messed up too. So, I have it 
> back
> to where it was--all sidebands, LSB and USB lined up but I have to adjust
> for cw by about 2 notches...its got me wondering...
>
> cheers
>
> scott
> ----- Original Message ----- 
> From: "Mike Hyder -N4NT-" <Mike_N4NT at charter.net>
> To: "scott sheppard" <scottsheppard at videotron.ca>
> Sent: Friday, November 12, 2010 6:39 AM
> Subject: Re: [TenTec] Argosy 525 offset for CW ...issues
>
>
>> Please let me know how you fare with the rig.
>>
>> 73, Mike N4NT
>>
>> ----- Original Message ----- 
>> From: "scott sheppard" <scottsheppard at videotron.ca>
>> To: "'Mike Hyder -N4NT-'" <Mike_N4NT at charter.net>; "'Discussion of 
>> Ten-Tec
>> Equipment'" <tentec at contesting.com>
>> Sent: Thursday, November 11, 2010 5:01 PM
>> Subject: Re: [TenTec] Argosy 525 offset for CW ...issues
>>
>>
>>> Thanks Mike...I will try that POT...and your idea re: cut off on the
>>> filter is along the same lines as to what I was thinking...especially
>>> since the ssb power output (heard) is lower as well...a friend is
>>> bringing over his IFR so I will have a go at that too.
>>>
>>> Cheers
>>>
>>> scott
>>>
>>> -----Original Message-----
>>> From: Mike Hyder -N4NT- [mailto:Mike_N4NT at charter.net]
>>> Sent: Thursday, November 11, 2010 4:18 PM
>>> To: Discussion of Ten-Tec Equipment
>>> Cc: scott sheppard
>>> Subject: Re: [TenTec] Argosy 525 offset for CW ...issues
>>>
>>>
>>> In every rig I've owned there was an internal pot which balanced the
>>> offset
>>> pot on the panel between transmit and receive.  The Argosy II manual
>>> shows
>>> the Control Board 80781 on page 3-25.  My best guesstimate in that R1 on
>>>
>>> that board is that pot.  I'd give it a go.  I might even phone Ten-Tec
>>> to
>>> get their advice as I can find nothing in the manual about adjusting the
>>>
>>> pot.
>>>
>>> About the power's being lower with the 8-pole filter, two things come to
>>>
>>> mind:  first, is it a Ten-Tec filter; and second, if your carrier
>>> oscillator
>>> is not properly adjusted, the narrower skirts of the 8-pole filter may
>>> be
>>> attenuating your signal.
>>>
>>> 73, Mike N4NT
>>>
>>> ----- Original Message ----- 
>>> From: "scott sheppard" <scottsheppard at videotron.ca>
>>> To: <tentec at contesting.com>
>>> Sent: Thursday, November 11, 2010 3:03 PM
>>> Subject: [TenTec] Argosy 525 offset for CW ...issues
>>>
>>>
>>>> Hello all
>>>>
>>>> I am in the midst of tuning up an older argosy I recently acquired.
>>>> While I have a bit left to do, most of it is done and it is working. I
>>>
>>>> am curious if anyone has any insight into a few issues I have as yet
>>>> unresolved:
>>>>
>>>> 1) Offset tuning. As it stands, on SSB the rig works fine.I listen on
>>>> the same freq as I Tx without any adjustment. On CW, however, I have
>>>> to crank the offset about 2 clicks to the left for 40m, 80m etc and on
>>>
>>>> CW 14 mhz, 2 clicks to the right in order to hear where I am txing.I
>>>> have looked in the manual but cant find the specific area where this
>>>> would be aligned. Obviously  a usb/lsb issue as they are identical yet
>>>
>>>> oposite offsets.
>>>>
>>>> 2) I also note that my low power output position, when chosen
>>>> (bypasses final PA) is significantly lower with the 8 pole filter as
>>>> opposed to the stock 4 pole. The 4 pole is about 4-5 watts out while
>>>> the 8 pole is about 2 watts.
>>>>
>>>> Appreciate any feedback.
>>>>
>>>>
>>>> 73  scott VA3IED
>>
>