why would you not need to use the Xtal to calibrate the VFO for ham use?

Bill K6TAJ

wrote:

Bill, There is also a tuning eye tube in back of xmtr , the Xtal and
tuning eye is used to calibrate the VFO .You won`t need the Xtal or eye
tube for ham use.. I used an Arc 5 about 60 years ago on 40 mtrs. I had
pretty good output BUT it chirped like all crazy..there were several
schemes to get the chirp out, none of them worked very well..If you can
get the VFO to key without chirping it will be all OK. Good luck 73
Harold W4PQW

zeno wrote:

why would you not need to use the Xtal to calibrate the VFO for ham use?

Bill K6TAJ

On the 6-9MHz one I had many moons ago the xtal cal point was up at the
top end, close to 9 MHz and didn't serve much of a purpose for exact 7
MHz calibration. Of course I was *supposed* to be using xtals as a
Novice :-)

It would be preferable just to accurately set the dial at 7MHz. Once
its set its very accurate. Its will be as exact as you can interpolate
across the little swath of the 40 CW band.

-Bill

zeno wrote:

why would you not need to use the Xtal to calibrate the VFO for ham use?

Bill K6TAJ

On the 6-9MHz one I had many moons ago the xtal cal point was up at the
top end, close to 9 MHz and didn't serve much of a purpose for exact 7
MHz calibration. Of course I was *supposed* to be using xtals as a
Novice :-)

It would be preferable just to accurately set the dial at 7MHz. Once
its set its very accurate. Its will be as exact as you can interpolate
across the little swath of the 40 CW band.

-Bill