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Re: HP-608A Repair


 

What a remarkable coincidence. I have just come back on the list after being on no mail for some time. Most of you are working on somewhat newer things than I am. I just finished putting a 606B and a 608D back into operation. I have run into a sticking meter problem with both. I was not able to use the modulation meter in the 606 and had to kluge a 100 microamp meter in its place. If anyone has either the modulation or RF level meter I have saved the scale so I could use it. On the 608 the RF Level meter sticks above the set point which makes it a lower priority but if anyone has one lying around it would be nice to have the full range capability. As with the 606, both meters are identical so if you have a modulation meter I can just switch the scales and be all set.

For the gentleman named Dennis Klipa I have quite a lot of experience with tube gear and I could probably fix it if none of the parts made of unobtainium are defective. I have a source for the pencil triodes although they aren't cheep. The shipping on it would be a bear though. I live in Bowling Green Kentucky.

Regards.

Max. K 4 O DS.

Email: max@...

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----- Original Message -----
From: "Steve Vineyard" <willltinker@...>
To: <hp_agilent_equipment@...>
Sent: Friday, December 21, 2012 9:05 AM
Subject: Re: [hp_agilent_equipment] HP-608A Repair


HP 608D's are good units, just big. If you are going to use it and
space is not a problem, by all means fix it if you do not have to spend
too much.

But keep in mind the market for these is very slow and they do not bring
much anymore. Most people don't have the space and newer smaller design
seem to have pushed them aside. Not that they are any better, just smaller.

I have one I keep for a back up, but use the two HP8656A's I have most
of the time (smaller, easier to setup, little warm up time). I think I
gave only $75 for mine several years ago. Not sure it would bring that now.

At least that is what the market looks like in my world.

Hope this helps.

Steve, KJ5RV

Dennis Klipa wrote:
Richard and Dave,

Thanks for the leads. I did find that it is the HP 608D with the crystal
calibrator option. I also found a photo of a 608D without the crystal
calibrator.

I am still looking for someone who might repair these
things, notwithstanding the question of whether it is worth the expense.

Best Regards,
Dennis, N8ERF


On Thu, Dec 20, 2012 at 2:58 PM, Richard Knoppow <dickburk@...>wrote:


**



----- Original Message -----
From: "Dennis" <klipadk@...>
To: <hp_agilent_equipment@...>
Sent: Thursday, December 20, 2012 7:24 AM
Subject: [hp_agilent_equipment] HP-608A Repair


I have a 608A that is in need of some repair. Actually, I
am not sure which "letter" it is as the label with model
and serial number is missing. The unit does work, but the
wave form is not very good in some ranges and there are a
few other issues. Is there anyone out there who
refurbishes these units. A few years ago, I found a place
on the web in Washington State, I think, that refurbished
them, but I can't find it now.

I have been telling myself that I would do it myself but I
just can't seem to get it up on the priority list. I did
search the archives but didn't find anything helpful.
There might be something but nothing popped up in my
search. Any help would be appreciated.

Best Regards,
Dennis, N8ERF

Check the -hp- archive site, there are old catalogues
at:


Also see:


where there are many photographs of older equipment and may
help to identify it.

The 608 series is shown at:



--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@...







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