Pete, there is an article in the September issue of QST called
"Amplifier Care and Maintenance" (pages 33-37). You can obtain a PDF
from the ARRL web site if you're a member.
73, de Mike, K9UW
Amherst, WI
On 12/6/2011 4:57 PM, N6QW wrote:
> I am new to this list and did check the archives to see if perhaps this was
> specifically covered by others. While there were references to drift
> correction in the Corsair's, I did not see this cure mentioned.
>
> Earlier this year I purchased a Corsair one that I would call in "medium"
> shape and was generally pleased with the purchase save for the drift problem
> that would take about 2 hours to finally stop drifting. But it was the the
> drift in the first half hour that was a killer. Keeping the rig powered on
> all of the time was not optimal. There are several manufacturers of "vfo
> stabilizers" including rolling your own.
>
> I decided to try a product from the UK called the X-Lock 2 which will be
> discontinued this month to make way for X-Lock 3. Now I can turn on the
> Corsair and after about 2 seconds it will lock on frequency and stay there.
> The kit price depends on the exchange rate but typically is around $40. I
> have no affiliation with the company but have included a link on my website
> so you can see how it was installed.
>
> 5 wires are used for the interface with two of those being power which is
> tapped into the Corsair rear apron aux power. 2 connections for the coax that
> samples the RF output and a 1 connection to the Offset pin on the PTO. There
> is a tri color led that shows the lock / unlock status and that I simply
> routed out the bottom of the Corsair Case and taped it to the bottom of the
> case. The range of the Offset is somewhat less with this fix but I am happy
> to forego a smaller range to gain the frequency stability. YMMV but I am only
> sharing what I experienced.
>
> see: http://www.jessystems.com/X-Lock%20(rev%201).pdf
>
> The manufacturer is Cumbria Designs, Ron Taylor G4GXO
> http://www.cumbriadesigns.co.uk/x-lock.htm
>
>
> 73's
> Pete N6QW
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>
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