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Old 18th Jan 2019, 3:48 pm   #22
g4wim_tim
Pentode
 
Join Date: Nov 2018
Location: Freckleton, Lancashire, UK.
Posts: 232
Default Re: 160 /80 / 60 mtr AM TX project

Hi Guys,

thought you might like to see a couple of photo's of the finished tx - had one or two small bugs to sort out, but all good now.

A nice easy 75 watts of carrier on all bands with 100% modulation, however I've just ordered a SL6270 VOGAD chip to help keep the modulation in check when needed.

The VOGAD will be external and switchable.

The VFO drifts some 400Hz LF in the first 30 minutes then settles on freq to within 10Hz (all at 1.9MHz the VFO fundamental).

Final job is a cage for the RF PA and a wrap around case.

73 Tim
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Building and tinkering for over 50 years, from 807's to digital amateur TV.
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