[Elecraft] No 10m band on K1

[N2EY@aol.com]

In a message dated 3/12/2003 3:25:21 AM Eastern Standard Time, joberreu@moselle.com writes:
 
> The biggest
> issue IIRC is the need for an appropriate mixer crystal to go on the band
> board.  The required value is non-standard. 

If my math is right, you'd need a 36 MHz xtal to cover the low end of 10 (K1 het xtals all seem to be 8 MHz higher than the lower band edge). Subtract 3.085 from 36.000 and you get 32.915, which is 4.915 above 28. 

You'd also need a filter that would pass 32.915-33.?? while adequately rejecting the sum product (39.085) and all the other nasties coming out of the premixer.

Also, even with the wide tuning range, you'd only get 10% of 10 meters.

> I haven't 
> actually played
> with the idea enough to know how easy it might be to fake.

18 MHZ rock doubling or 12 MHz rock tripling are two options, but that takes additional parts.

--

Go down the K1 mod road long enough, and you wind up designing a K2. I would not be surprised if that's what Wayne and Eric did. One good idea leads to another and pretty soon....

73 de Jim, N2EY