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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 16th Nov 2022, 7:11 pm   #1
longneck90
Hexode
 
Join Date: Sep 2013
Location: Wembley, London, UK.
Posts: 395
Default Digimess SG100 RF Signal Generator. 100 KHZ to 150 MHZ

Hello to all. This machine isn't working and I was wondering if anyone from this Forum repairs such items. All the best. John.

Last edited by Radio Wrangler; 16th Nov 2022 at 9:11 pm. Reason: Spelling in title. would send people looking for digiNess
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Old 16th Nov 2022, 10:18 pm   #2
longneck90
Hexode
 
Join Date: Sep 2013
Location: Wembley, London, UK.
Posts: 395
Default Re: Digimess SG100 RF Signal Generator. 100 KHZ to 150 MHZ

Hello. Sorry about mistake. It is a Diginess SG 100 RF Signal Generator. All the best. John.
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Old 20th Nov 2022, 7:09 pm   #3
RadarAl
Triode
 
Join Date: Aug 2014
Location: Redditch, Worcestershire, UK.
Posts: 46
Default Re: Digimess SG100 RF Signal Generator. 100 KHZ to 150 MHZ

What is the fault, what are the symptoms?
I have a Digimess SG100, bought brand new from Digimess. I had no 1kHz modulation signal, the trimmer on the pcb needed tweeking to get the op-amp to oscillate. If I tune a radio to pick up the signal and tap the SG100 case the signal sounds "microphonic", have yet to discover which component, have gently tapped every component in turn with no luck.
I have a circuit diagram if that is of use.
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