[R-390] 8640B

[Mack Rogers]

And here I thought myself as being a bit obsessive compulsive when I purchased my second 8640. Bottom line is it's the biggest bang for the buck out there at this time. It's a very good and accurate sig gen with a super clean output.

N4VGB
Mack Rogers




--- On Mon, 1/10/11, wa4aos at aol.com <wa4aos at aol.com> wrote:

> From: wa4aos at aol.com <wa4aos at aol.com>
> Subject: [R-390] 8640B
> To: r-390 at mailman.qth.net, gcbojr at aol.com
> Date: Monday, January 10, 2011, 2:45 PM
> 
>  
> 
>  Hi Group,
> 
> I have 4) 8640B's in my electronics lab and use them often.
> I have them set up on various benches and that makes
> service, burn-in and evaluation all possible with minimal
> moving units around. I bought two of the from George Bojr in
> Texas and he has repaired another one for me. He has parts
> for the 8640B and does a GREAT job with service. The turn
> around was quick and I was very pleased. You can find them
> cheaper on ebay but understand you may get a dud and or one
> with split gears and other issues. George can not give you a
> NIST sticker but his equipment is calibrated and all of my
> units are dead on between units. He does sell on ebay but
> may have inventory for sale at any given time. 
> 
> Personally, I like the 8640B for receiver work. They are
> accurate, dependable and small compared to older units like
> the 606A/B..You can also use it's internal counter for
> external measurements, so, it's really two pieces of
> equipment, though, I have other counters, 
> 
> Typically, I let them warm up half an hour before I do any
> serious alignments as I would no matter what generator I
> use.. Like most HP gear, the 8640B accepts and external
> 10MHz reference input should you care to do that. I bought
> one of the 10MHz GPS receivers on ebay with antenna for
> around $150 and build an adequate distribution unit to
> reference a number of HP items in my lab. You can also find
> pulled Rubidium clocks with a 10MHz out very cheap now as
> well, under $100. Nothing like knowing you are dead on
> accurate.
> Keep in mind, the 10 MHz external reference is just
> something I wanted to have; I have a very bad case of
> gadget-itus. Hi Hi . 
> 
> The 8640B's calibrated are plenty good enough for almost
> anything you will need for working on HF receivers.
> 
> His email address is 
> www.gcbojr at aol.com
> 
> 73,
> Glenn Scott WA4AOS
> DSM Labs
> 
> 
> 
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