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Vintage Philips function generators: Questions
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cvanc:
So I'm looking for a cheap but nice function generator and came across some old Philips models (PM5131, PM5135, others?).  Any opinions on these, are they OK and reasonably trustworthy after all these years?

Need to hunt down very narrow high-Q resonances in loudspeakers, and a big vernier dial adjusted by hand seems like a workable solution.  From a quick search the Philips models are more affordable than HP or Leader equivalents.

All comments welcome, thanks.
tautech:
I've got an old PM5131 somewhere and it was my first sig gen.
Never had any issue with it other than a bit of noise on the pots which is par for the course in older stuff.
The big dial was way off frequency at the upper end but other than that it worked fine.

I'd put the manual up but it's 3 MB and AFAIK not hard to find online.
trobbins:
A free software sine generator like in REW provides 0.5Hz resolution settings up to 200Hz, and 1Hz above that - I'd suggest a lot more repeatable and accurate than analog equipment you may acquire - and ready to go within minutes  ;)
vk6zgo:

--- Quote from: trobbins on May 17, 2019, 03:10:53 am ---A free software sine generator like in REW provides 0.5Hz resolution settings up to 200Hz, and 1Hz above that - I'd suggest a lot more repeatable and accurate than analog equipment you may acquire - and ready to go within minutes  ;)

--- End quote ---

Solid state analog is ready to go within seconds!
Even tube stuff would be up in a minute.
trobbins:
Not if you don't have the equipment and need to find something on ebay - which is I think the situation.

Of course that assumes the OP is using a PC with a soundcard  :-\
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