[Lowfer] new 500 kHz grabber

[Mike WE0H]

That is what I use for my receive converter. I put in my own lowpass 
filter in the front end and don't use the BJT preamp stage. It is 
referenced from a 3mc oven oscillator. Been working fine for quite some 
time now. Only one failure where the mixer got nailed by the TX one 
evening but a new SA612 and she played fine after that swap. I put back 
to back 1N4148 diodes in the front end to stop any big TX signal issues.

Mike
WE0H


Steve Ratzlaff wrote:
> Jackson Harbor Press has a $17-shipped price LF converter 
> kit--probably the best value around for a quick and easy LF converter. 
> http://home.att.net/~jacksonharbor/lfconv.htm
> Its input lowpass filter cuts off around 430kc and the converter is 
> aimed more towards the 137kc band, and lower NDB band usage. But it 
> would be fairly easy to change the existing LPF to go higher to 
> include the 600M band. The converter comes with both a 4 and 10Mc 
> crystal to choose what freq to upconvert to.
> Cuba plays easy listening music on 530kc at night; is generally good 
> copy here most evenings when conditions are decent and static is low. 
> 530 RVC Turks and Caicos used to be there too, but the last major 
> hurricane took down their antenna and it probably won't be some time 
> until they can get another one up. 529 LYQ is often a big signal here 
> too. 520 BHZ, Brazil isn't a strong signal but can be heard 
> frequently, using the narrow audio filter.
> 73,
> Steve
> NE Oregon