[Elecraft] K3 and Heathkit SB-610 monitor scope

Dave G4AON elecraft at astromag.co.uk
Wed Apr 29 12:57:00 EDT 2009


James I am not sure you will get value for money from an SB-610, they
date from the days when a decent oscilloscope was big and expensive.
These days 'scopes with the capabilities to monitor your peaks are
general purpose test items and don't cost much. The K3 also has a two
tone test oscillator built in. The IF output of the K3 is quite low
level and is centred on 8.215 MHz, not the final IF of 15 KHz.

For my money, I would look for a general purpose oscilloscope for the
shack and an SDR receiver ranging from the low cost Softrock IF, to
LP-PAN or the more expensive general coverage ones. These will give you
a panoramic view of the band and be far more useful than an SB-610, even
if it could be converted to work at the K3 IF output.

73 Dave, G4AON
K3/100 #80, Perseus SDR
http://www.astromag.co.uk/k3/
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I'm not very familiar with using monitor scopes, so please bear with me.
I'm interested in picking up a used Heathkit SB-610 in order to monitor my
sideband wave forms. From what I understand, all I'd need to do is connect
the antenna out of the K3 to the SB-610, and the antenna input to the
SB-610.

Can anyone with experience with this scope know if it will work well with
the K3? I think this SB-610 has a 455KHz coil installed as well. I do
believe they can be switched out for a 4-6KHz coil for monitoring a
receiver's final IF. I don't recall what the final IF of the K3 is
operating at.

73 de James K3JPS


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