Robyn T240-D

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244terminatorVA
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Robyn T240-D

Post by 244terminatorVA »

I was wanting to direct inject my Robyn T240-D. Any sujestion on where to inject the audio?
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Goldfinger
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Re: Robyn T240-D

Post by Goldfinger »

Inject through a .1uF, 250V to pin 2 of V5b where C511 feeds the tube. You will also have to change C601 to a .1uF, 250 volt.
One problem I see with direct injecting this radio is that the transmit/receive switching is rudimentary which will allow the injected audio to be heard through the speaker in receive. You could direct inject the mic jack but would have to make all of the caps in the amp chain larger.
robyn240inject.jpg
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grimace
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Re: Robyn T240-D

Post by grimace »

terminator look at this it mite help I mite have some of the parts
http://wwpdx.com/wwpdx.com/ForumWWPDX/v ... 32&t=16327
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