[TenTec] info on Delta (Delta "1" model 580?)

[n4lq@iglou.com]

Hmmm. The first human phased lock loop. HPLL. 

I suppose one could install a "Freq-mite" from Small Wonders Labs. That 
little gadget will beep out the frequency in Morse code when you push a 
button.

N4LQ 

-----Original Message-----
From: "Phil Chambley, Sr." <k4dpk@romecomputer.com>
To: <tentec@contesting.com>
Date: Mon, 6 May 2002 11:30:01 -0400
Subject: Re: [TenTec] info on Delta (Delta "1" model 580?)

> Hey Mike....
> 
> I had a 580 and was bothered by the same problem with the display.  The
> inaccuracy was caused by heterodyne oscillator crystals aging and
> changing
> frequency, and since there were no trimmers across them, there was no
> way to
> bring them back.
> 
> I installed a pulsing 25 khz freq marker, and put a varactor across the
> time
> base crystal in the display unit.  The voltage dividing pot was
> installed so
> that it came through the bottom cover (pointing down) just behind the
> front
> panel skirt.  When I changed bands, I hit the marker and adjusted the
> display when necessary.
> 
> Phil Chambley
> -----Original Message-----
> From: Mike Hyder -N4NT- <N4NT@chartertn.net>
> To: Brien Pepperdine <pepperb@gov.on.ca>; tentec@contesting.com
> <tentec@contesting.com>
> Date: Monday, May 06, 2002 10:35 AM
> Subject: Re: [TenTec] info on Delta (Delta "1" model 580?)
> 
> 
> >I always thought the Delta 580 was a pretty good rig.  I can tell you
> >that Al Kahn (of Ten-Tec fame) had his choice of rigs and ran the 580
> >mobile for a long time.  The only major shortcoming in my book is that
> >the frequency display counter pre-scales for each band crystal.  Since
> >the pre-scaling is not necessarily the same as the crystal's
> >frequency, the display is not accurate, being off maybe 2 kHz on a
> >band and off 2 kHz the opposite direction on another band.  For me,
> >that was really bothersome -- I can do better with an analog rig and a
> >calibrator.  Otherwise, the QSK is great and the rig always worked
> >smooth for me.
> >
> >It's value on today's market if in excellent shape would be about $300
> >US, depending on what options are installed (noise blanker, CW filter,
> >etc.).
> >
> >73, Mike N4NT
> >
> >----- Original Message -----
> >From: "Brien Pepperdine" <pepperb@gov.on.ca>
> >To: <tentec@contesting.com>
> >Sent: Monday, May 06, 2002 9:24 AM
> >Subject: [TenTec] info on Delta (Delta "1" model 580?)
> >
> >
> >|
> >| Anyone wishing to comment on the original Delta, please email me.
> >| One has appeared from an estate and both myself and the 'inheritor'
> >would
> >| like to know about this rig.
> >| Seems to have had a shortish model life some back so not a lot of
> >web
> >| based info, so any comments on yay/nay, use,
> >| operational expectations, performance, the usual scuttlebutt etc.
> >would be
> >| welcome so we can determine if we are going to keep, utilize or take
> >to
> >| hamfest.
> >|
> >| 73
> >|
> >| Brien Pepperdine
> >| VE3VAW
> >
> >_______________________________________________
> >TenTec mailing list
> >TenTec@contesting.com
> >http://lists.contesting.com/mailman/listinfo/tentec
> >
> 
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