[Lowfer] Will an LF UpConverter Really be worth the effort, and expense

[Ben Hall]

On 12/6/2014 7:33 AM, Douglas D. Williams wrote:
> The only LF converter that I have found to be adequate for QRSS work is the
> one that Todd Roberts custom builds. It uses the AMRAD design, as published
> in the April, 2002 edition of QST, but Todd has modified the circuit and
> added a very large and stable ovenized 3.0 MHz oscillator. I use one in

I wonder where he obtained the oven-stabilized oscillator?

I've been tempted to build the AMRAD converter even after having good 
results (with QRSS30 as the slowest mode I've tried) with my Jackson 
Harbor Press upconverter that uses a 4.0 MHz computer xtal.

Mostly just 'cause I like to build things.  ;)  Probably I should be 
building a low-pass, 500 kHz filter first to cut down on the local AM BC 
junk around here.

The e-place and the usual surplus outlets seem to have a ton of 10 MHz 
units, a good quantity of 5 MHz units, but I've not seen many else. 
Ideally, I'd like to find one that is 7 MHz so I'm using the 40M band in 
the KX3, but so far, no luck.

thanks much and 73,
ben, kd5byb