Tony, If you are able to achieve a linear 1 dial division equals 1 kHz calibration for that dial, please let me know what capacitor you used and other parameters involved - I have two of those National Dials in the jumkbox/
It is typical that dial could be read in 1 kHz increments given that the average band coverage was 500 kHz. That is 1 kHz per division. Contrast that with the digital frequency readouts of today that give you resolution down to the nearest Hz if you select the fine tuning rate. Those old days had their benefits (1 kHz tuning accuracy was considered exceptional). Do we want to go back to those days? I think not. 73, Don W3FPR On 4/4/2012 11:25 PM, Tony Estep wrote: > On Wed, Apr 4, 2012 at 9:49 PM, Ron D'Eau Claire<[email protected]> wrote: > >> My first "world class" receiver was a National HRO5TA1 from the early >> 1940's..... > =========== > The HRO receivers had that fantastic dial with the planetary vernier gizmo > inside and the numbers peeking through the holes -- to me, that was the > most romantic piece of gadgetry in the history of ham radio. A modern > version with a virtual picture of that dial on a screen would be a major > marketing coup. > > Tony KTØNY > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
