[ARC5] Amazon Sig Gen as Crystal Subber

[Tim]

>
> So, David, which one of those available on Amazon are you using? The
> Koolertron 60 MHz
> job, or another one? It is kinda hard to tell from your photo.
>
> Ken W7EKB
>
----------------------------

> Hi Guys - I have the Koolertron DDS, the 60 MHz option.
>
I'm not familiar with the VHF ARC-5 radio design offhand but I assume Dave
is using the DDS in lieu of a crystal to drive the R/T oscillator
circuits.  I would guess those utilize multiplier chains.  So I guess
driving a multiplier chain would best function with an input already rich
in harmonics, unlike a pure sine.  So in that application square waves rich
in 3rd harmonics, or pulses in general makes good sense.  As a drive source
for an HF MOPA transmitter (or receiver LO) a sine works well. Thanks Dave
- you should be getting a commission!  A pretty handy piece of test gear...
(my LM-14 is giving me the Stink Eye !)
73, Tim
N6CC
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