[TenTec] Orion/O2 Drift Problem-who is interested in a fix?

[Jeff Sumner]

A hearty two, to this on psk. CocoaModem on the Mac implements AFC, which masks drifting- both the reciever and the transmitter.

J



-----Original Message-----
From: "Martin AA6E" <aa6e at ewing.homedns.org>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: 1/30/07 3:25 PM
Subject: Re: [TenTec] Orion/O2 Drift Problem-who is interested in a fix?

The Orion is just fine for PSK31 as far as I've ever experienced.  That 
is, as long as you fine tune the signal - with the computer or using the 
VFO.  If you were only allowed to listen on a spot frequency (no 
tuning), then the accuracy and drift of the VFO would be a problem on 
the higher bands.

FWIW, my old TS-520S works quite well on PSK31, after warm-up!

The reason I would like lower drift and higher accuracy is that 
sometimes I want to measure frequencies accurately.  Secondarily, it's 
nice to be able to dial up a net accurately the first time.  (But what's 
the point of being more accurate than everyone else on the net?) 
Finally, having paid for a premium rig with 1 Hz dial resolution, I'd 
like an option for a better osc. or external reference.

73 Martin AA6E

Dave Heil wrote:
> Ken N9VV wrote:
>> PSK31, Olivia, and other digi modes DEPEND on stable signals on both 
>> ends. Old time boat anchors are not generally used on digi modes due to 
>> their drift and instability.
>> Ken N9VV
> 
> If the drift takes hours, why does that present a problem.  When is the 
> last time that you had a PSK31 QSO which lasted for hours?