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Re: [TenTec] DDS VFO as remote VFO?

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] DDS VFO as remote VFO?
From: Bwana Bob <wb2vuf@gti.net>
Reply-to: wb2vuf@arrl.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 24 Apr 2009 09:54:54 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Hmmm...  Would a DDS VFO work in the Scout?


                        Bob WB2VUF

veast1 wrote:
> Lee,
> I am going down this same road with my back-pack rig.  It's an MFJ 40 
> mtr. SSB rig.  The VFO is highly unstable and i am going to substitute a 
> DDS VFO for the analog VFO that is in the rig.  The reason i say "I am 
> going to ...." is because i am waiting on NORCAL QRP Club to get their 
> FCC-2 DDS VFO kit together as they have sold out and are temporarily out 
> of stock.  I don't know anything about the N3ZI DDS VFO, however i have 
> measured both the frequency and the output power of the stock one in my 
> rig and the NORCAL one should work.  Have you measured the output of the 
> Delta's PTO to determine if the one that you have purchased is compatible?
> Paul (N6MYA)
> lee berman wrote:
>> I am attempting to correct the thermal drift on my 580 Delta PTO, by using a 
>> Direct Digitally Synthesized VFO as a remote VFO.  The DDS output is said to 
>> be ~500mV P-P (I've not measured it myself).  To date, I had no success.  I 
>> wonder if anyone else on this reflector has successfully done this and can 
>> point me in the right direction.  The unit I'm trying is the one by N3ZI.
>> Other "fixes", such as PTO rebuild, and the K4DPK unit have worked well for 
>> many other hams, but not me.  The drift is definitely in the PTO, defintely 
>> thermally induced and does not settle out after hours of on time, so this is 
>> my latest effort at ending it.
>> thanks,  ~Lee, W1IDZ
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