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Tram D201 external VFO low output

Discussion in 'General CB Services Discussion' started by klj2497, Jun 21, 2019.

  1. klj2497

    klj2497 Member

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    i connected a siltronix 90-3 vfo. to Tram #1 i removed the ch23 crystal, and soldered the center of the cable to the bottom (power side) of the channel 23 socket and grounded it away from the socket.Going through the vfo on ch23 I tuned c711 and c712. On am it is getting 1 1/2 watts and a swings to 3watts on ssb it is swinging about 2watts. the reading off the vfo on ch20 is 5watts with a swing to 12watts on am and a 10watt swing on ssb


     
    #1 klj2497, Jun 21, 2019
    Last edited: Jun 21, 2019

  2. klj2497

    klj2497 Member

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    I removed the ground i had clipped from the radio chassis to the vfo ground and got 3watts am from 1 1/2watts. ssb is the same 2watts i tuned c711 and c712 again. still low output
     
  3. klj2497

    klj2497 Member

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    I am searching to find a output amplifier for the siltronix 90-3. i have found some info for a little amp. but its for a dds vfo.
     
  4. klj2497

    klj2497 Member

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    im not having any luck yet Does anyone have any ideas i want to buy or make an amplifier to increase the vfo output for my siltronix 90.
     
  5. tecnicoloco

    tecnicoloco Tweaknician in Training

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    Talk to Nomad about it

    He makes modifications to the vfo for your radio

    My 2 Tacos
    Tecnicoloco
     
  6. nomadradio

    nomadradio Analog Retentive

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    So here's the one we developed to put inside a tube-type Browning transmitter.

    http://www.nomadradio.com/OldNomadWebPages/SBinstall/index.htm

    Eventually my idiot light came on when a customer suggested we just put it in the VFO. That's part of the Siltronix rebuild we do with the digital display and new front panel.

    Part of.

    Oughta put together a quick how-to for installing it in the VFO. Never got that web page done. But I think we have enough pics to post the procedure here.

    Probably ought to put the whole process we use for the digital conversion up in a post.

    But one thing at a time. I'll pull together the info for the inside-VFO install the next few days.

    73
     
    Shadetree Mechanic likes this.

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