[Elecraft] K3 and Heathkit SB-610 monitor scope

[w5ov at w5ov.com]

The SB610 is a transmit monitor scope. It is not a bandscope. The model
SB620 was a bandscope.

The SB610 is still very useful for monitoring your transmit signal through
an amplifier for proper modulation and trapezoidal waveforms etc. Good
luck finding parts.

73,

Bob W5OV
ex- "One of the Hams at Heath"



> 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/
> ----------------------------------
> 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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