[time-nuts] 5950 Crystal impedance meter manual

Bob kb8tq kb8tq at n1k.org
Wed May 23 09:43:36 EDT 2018


Hi

Gizmo’s like that were very common in the days before network analyzers became 
good enough to measure a crystal. They always were a troublesome item to keep 
running accurately. Without accuracy, their value was a bit limited. Every place I 
know of had a big drawer ( or cabinet ) of “magic crystals”. You plugged them in
and adjusted the instrument until they all read as they should. One could easily
challenge this in terms of accuracy. It did ensure that all the meters in the plant 
had some chance of reading the outgoing product the same way. 

So - you don’t just need the manual, you also need the batch of calibration crystals
(and their data) that went with it. Then you can duplicate the readings from whatever 
factory used it ….

Lots of fun !!!

Bob

> On May 23, 2018, at 4:44 AM, timeok at timeok.it wrote:
> 
> 
>   Hi all,
>   I found this Crystal Impedande Meter produced by RFL Industries inc, Boonton.
>   I would like to understand how to use it and I do not have any documentation.
>   I'm not even able to figure out if it works properly.
>   I would like to ask you if someone owns the service/operating manual and can share it with me.
>   Look at the picture thanks
>   Luciano
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