[Test-Equipment] HP audio oscillator FS?

Tue Dec 13 15:19:04 EST 2016

I had Brettuns Village make a handle for my 410B.  It is folded and stitched.  I really don't care for the belt-buckle variety.  The one I have is "okay" but would like something closer to the original.

I don't recall, however, seeing the "Stitched Leather Handle with Mounting Rings" offering shown on that page.  I don't know if it's the correct length to fit in the existing loops but if it is, that would be a very nice replacement.  Of course, it requires drilling the old brackets and then reattaching with screws (unless you happen to have a riveter...) but once I did that, it really isn't very noticeable.

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
> To: test-equipment at mailman.qth.net
> Sent: Tuesday, December 13, 2016 1:59:38 PM
> Subject: Re: [Test-Equipment] HP audio oscillator FS?
> 
> A workable but identical handle for -hp- instruments like the 200CD
> and 410B can be gotten from
> 
> 
> http://www.brettunsvillage.com/trunks/howto/parts/schandles.htm
> 
>     The ones I've used are the kind with a loop and buckle, they will
> fit the existing staples on the case. To use other handles you must
> remove the staples to get the handles on them. Since clearance inside is
> limited you must use rivets to replace them, screws stick out too far.
>       The key for a 200CD and other oscillators using lamps in the
> circuit is to make sure the lamps make good contact with the sockets.
> The quality of the lamps make a difference in the distortion. -hp-
> "aged" the lamps but I found out that they just ran new lamps up to
> barely visible heat and then backed the voltage down slowly, the idea
> being to relieve strains in the filaments. The late 200CD could be
> tweeked to much less than half the distortion spec and still be stable.
> Very early ones would often just make the spec.
>      If yours has bent capacitor plates just leave them, that was a part
> of the adjustment at the factory.
> 
> On 12/13/2016 8:01 AM, Barry wrote:
> > I think mine had some issues that most likely pointed to dirty power as
> > well.  I'd intended to refurbish it to some degree but in a fit of
> > downsizing, I sold it.  I have other audio generators but there's just
> > something about that big old tube gear that attracts me to it.  This one
> > was in pretty nice shape too.  I think that handle might have been a
> > replacement and sure wish I could find some of those as my 410B could use
> > a better handle.
> >
> > Good luck with your new acquisition.
> >
> > Barry - N4BUQ
> >
> > ----- Original Message -----
> >> From: "Brian Burns" <brian at lessonsinlutherie.com>
> >> To: "Discussion of Electronic Test Equipment"
> >> <test-equipment at mailman.qth.net>
> >> Sent: Tuesday, December 13, 2016 9:55:44 AM
> >> Subject: Re: [Test-Equipment] HP audio oscillator FS?
> >>
> >> Hello Barry,
> >>
> >> Yep, that's the one all right. I wish I had kept mine, but it was blowing
> >> fuses. It turned out to just need new filter caps in the power
> >> supply---they
> >> had shorted.
> >>
> >> Cheers,
> >>
> >> Brian
> >>
> >>
> >>
> >>
> >> ---Original Message-----
> >> From: Test-Equipment [mailto:test-equipment-bounces at mailman.qth.net] On
> >> Behalf Of Barry
> >> Sent: Tuesday, December 13, 2016 7:24 AM
> >> To: Discussion of Electronic Test Equipment
> >> Subject: Re: [Test-Equipment] HP audio oscillator FS?
> >>
> >> Sold mine a few years back.
> >>
> >> http://www.knology.net/~thelanding/ForSale/images/hp200cd-2.JPG
> >>
> >> Kinda wish I hadn't done that now...
> >>
> >> Thanks,
> >> Barry - N4BUQ
> >>
> >> ----- Original Message -----
> >>> From: "Ian Wilson" <ianmwilson73 at gmail.com>
> >>> To: "Discussion of Electronic Test Equipment"
> >>> <test-equipment at mailman.qth.net>
> >>> Sent: Tuesday, December 13, 2016 9:06:01 AM
> >>> Subject: Re: [Test-Equipment] HP audio oscillator FS?
> >>>
> >>> Hi Brian,
> >>>
> >>> If you are still looking I have one of the 200 models. Yours for
> >>> shipping (I was reluctantly thinking of parting it out - gasp).
> >>>
> >>> 73, ian
> >>>
> >>> On Tue, Nov 8, 2016 at 5:22 PM, Brian Burns
> >>> <brian at lessonsinlutherie.com>
> >>> wrote:
> >>>
> >>>> Hello All,
> >>>>
> >>>>
> >>>>
> >>>> Some years ago I was on a forum that was for HP test equipment
> >>>> buffs---now that's pretty arcane! Anyway, I ended selling and
> >>>> trading various pieces of equipment, and silly me I let my HP 200
> >>>> (?) audio oscillator go. Now I need it, or one functionally like it,
> >>>> again. I'm leery of buying one on ebay, and thought I would see if
> >>>> any of you guys have something for sale.
> >>>>
> >>>>
> >>>>
> >>>> Cheers,
> >>>>
> >>>>
> >>>>
> >>>> Brian Burns
> >>>>
> >>>>
> >>>>
> >>>> Toll free: 866-214-9472
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> ---
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> --
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
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