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On 19 Oct 2004 at 23:08, Dave Hall wrote: > They are the wavelengths in metres of typical broadcast bands - short > wave AM - for bandspread to allow the whole of the band to be swept with > lots of turns of the tuning knob. My '57 radiogram has 16,19, 25, 31, > 41, and 49 marked with lines to show the extent, but not the top end > ones (bottom?) When I try to work that out, our (1 MHz) AM band comes out to 300 m, so these bands would all be very much higher than this. These aren't ham bands, either, because I think the old traditional ham bands were 10, 20, 40, 80 m. And how would you tune this? At first I thought this would be impossible, but you could heterodyne a higher frequency down to the AM band and then tune with the radio's tuner. The blank button would just pass the unaltered signal straight thru to the radio. > I like Kermit in the bud vase - less cissy than a flower. That's a difference I never expected; we spell it sissy.... ;-) -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~