<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Missed the beginning of this thread but the thought certainly occurs to me that one might be a lot better off just skipping the idea of keeping the CRT et al. If you want to keep the looks of the SB-610, just gut the SB-610 and then put one of the new small little notebook computers or eReader or what have you inside it for a display. Hook up some analog to digital converter blocks and write a little (?) bit of code and away you go. In fact, go color if you can and you can really get fancy.<br><br>73<br>Bob Groh, WA2CKY<br></div><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><br><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight:
bold;">From:</span></b> Chris Kepus <ckepus@comcast.net><br><b><span style="font-weight: bold;">To:</span></b> jeffers.rj@xtra.co.nz; heath@puck.nether.net<br><b><span style="font-weight: bold;">Cc:</span></b> Dave Cook <davec@netdave.com><br><b><span style="font-weight: bold;">Sent:</span></b> Tue, November 1, 2011 11:12:31 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Heath] SB-610 Monitor Scope<br></font><br><style><!--
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--></style><div class="WordSection1"><p class="MsoPlainText">Bob,</p><p class="MsoPlainText"> </p><p class="MsoPlainText">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.</p><p class="MsoPlainText"> </p><p class="MsoPlainText">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. </p><p class="MsoPlainText"> </p><p class="MsoPlainText">Here is what Dave said in April in his first summary to this list:</p><p class="MsoPlainText">********************************************************</p><p class="MsoPlainText">-----Original Message-----<br>From: heathkit-bounces@mailman.qth.net [mailto:heathkit-bounces@mailman.qth.net] On Behalf Of Dave Cook<br>Sent: Thursday, April 07, 2011
7:26 PM<br>To: 'Heathkit List Server'<br>Subject: Re: [Heathkit] SB-610 solid state conversion</p><p class="MsoPlainText"> </p><p class="MsoPlainText"> </p><p class="MsoPlainText">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:</p><p class="MsoPlainText"> </p><p class="MsoPlainText">1. The general consensus is that converting my SB-610 to solid state is a reasonable idea.</p><p class="MsoPlainText">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.</p><p class="MsoPlainText">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.</p><p class="MsoPlainText">4. Several of you expressed interest in collaborating on this. I'll contact you directly, offline.</p><p class="MsoPlainText">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.</p><p class="MsoPlainText"> </p><p class="MsoPlainText">Thanks again for all of your opinions and suggestions.</p><p class="MsoPlainText"> </p><p class="MsoPlainText">73, Dave WA0TTN</p><p class="MsoPlainText">**********************************************************************</p><p class="MsoPlainText"> </p><p
class="MsoPlainText">Chris</p><p class="MsoPlainText">W7JPG</p><p class="MsoPlainText"> </p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"sans-serif";color:#1F497D;"> </span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in;"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"sans-serif";">From:</span></b><span style="font-size:10.0pt;font-family:"sans-serif";"> heath-bounces@puck.nether.net [mailto:heath-bounces@puck.nether.net] <b>On Behalf Of </b>jeffers.rj@xtra.co.nz<br><b>Sent:</b> Friday, October 28, 2011 7:57 PM<br><b>To:</b> heath@puck.nether.net<br><b>Subject:</b> [Heath] SB-610 Monitor Scope</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">Has anyone re-built a Heathkit SB-610
Monitor Scope and used a PC Board rather than point to point wiring.</p></div><div><p class="MsoNormal">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.</p></div><div><p class="MsoNormal">Bob ZL2AAQ.</p></div></div></div></div>
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