[Heath] SB-610 Monitor Scope

[Chris Kepus]

Bob,

 

There is an effort by Dave Cook, WA0TTN, to covert the SB-610 to solid
state. That may or may not be what you're looking for but here is some info
for your review.

 

He sent an update on his efforts to me in July but I haven't seen any posts
from him since.  Since I am directly copying him in on this message, maybe
he will let us know how things are going. 

 

Here is what Dave said in April in his first summary to this list:

********************************************************

-----Original Message-----
From: heathkit-bounces at mailman.qth.net
[mailto:heathkit-bounces at mailman.qth.net] On Behalf Of Dave Cook
Sent: Thursday, April 07, 2011 7:26 PM
To: 'Heathkit List Server'
Subject: Re: [Heathkit] SB-610 solid state conversion

 

 

Well first of all, I thank you all for the overwhelming response to my
query. What a great group! I think I got the answers I was looking for, and
then some. Here's a summary of the responses, both on the reflector and
directly to me:

 

1. The general consensus is that converting my SB-610 to solid state is a
reasonable idea.

2. I took a look at the SB-614 and HO-5404 schematics. I didn't know these
were solid state scopes. But I found they're both using all discrete
transistors, c.a. mid-1980's and the circuits seem a bit elaborate when
compared with the simplicity of op-amps circuits. Still, I got some good
general ideas of how the early inexpensive transistorized scopes were
designed.

3. I got my parts order for this project from Mouser today. The HV
transistors I'm using for this project are only $0.20 apiece and the
wideband low-noise dual op-amps are $0.60 apiece. Kind of difficult to
justify buying a junked SB-614 to salvage the circuit board when these parts
are so cheap.

4. Several of you expressed interest in collaborating on this. I'll contact
you directly, offline.

5. I'll most definitely post my results to the group after my first
prototype is completed. It might even be worth a QST article.

 

Thanks again for all of your opinions and suggestions.

 

73, Dave WA0TTN

**********************************************************************

 

Chris

W7JPG

 

 

 

From: heath-bounces at puck.nether.net [mailto:heath-bounces at puck.nether.net]
On Behalf Of jeffers.rj at xtra.co.nz
Sent: Friday, October 28, 2011 7:57 PM
To: heath at puck.nether.net
Subject: [Heath] SB-610 Monitor Scope

 

Has anyone re-built a Heathkit SB-610 Monitor Scope and used a PC Board
rather than point to point wiring.

I also have an HO-10 that needs to be re-built and would prefer to use a PC
Board rather than point to point wiring.

Bob ZL2AAQ.

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