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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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Thread Tools |
14th Feb 2018, 6:54 pm
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Nonode
Join Date: Mar 2008
Location: Aberdeen, UK.
Posts: 2,852
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Marconi 995A/5 Sig Gen Modulation Interference
Just wondering - are there any 995A/5 buffs out there who have experienced AM modulation remaining when FM is selected on S1. I.e. 50% AM modulation (meter fsd) set, but approx. 25% remains when set to Int. FM when scoping 20MHz 100mV o/p profile. Note, modulation meter(Racal Dana 9009A) had given correct AM & FM settings of 50% AM, & 5Kc/s & 15 Kc/s Dev.
Regards, David |
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