[Elecraft] Elecraft Receiver

[Larry Phipps]

It was correctly pointed out to me off-list that my example of a 7 MHz 
"IF" would tax the input filters in order to get the best image 
rejection. I used that example since it was the first band that starts 
at "000".

The filtering requirement could be relaxed considerably by using a 28 
MHz "IF". The PLL synth chip I am looking at is good to 185 MHz... 
moving the LO to 28.5 - 56 MHz would cover .5 - 28 MHz... the converter 
wouldn't have to cover 28-30 MHz since the K2 does that. It would also 
keep the sidebands consistent for all frequencies.

I was thinking of using a PIC to control the counter in the PLL, UP/DN 
buttons to change bands... and a 3 1/2 digit LED display to show the 
first three digits of the receive frequency.

Larry N8LP


Phil LaMarche wrote:

>Even though I have a Collins R-388 that I use on AM, I would also purchase a
>receiver immediately.  
>
>Phil  K2 & KX-1
>
>Philip LaMarche
>LaMarche Enterprises, Inc.
>www.instantgourmetspices.com 
>727-944-3226
>(800) 395-7795 pin 02
>Cell 727-510-5038
>FAX- 727-937-8834
>N.A.S.F.T # 30210
>W9DVM
> 
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