Robyn 520 D

[Stuck in the mud]

I have a Robyn 520 D . It showed a small carrier of around 3 on the S meter on the dead key . The radio worked great and talked great . Decided to recap it and put the modulation upgrade in it . Now the radio works great but now I am showing a carrier of about 9 on the S meter. Is this possible in the alignment? New to repair HELP Thanks Dale

 

[BJ radionut]

Forget S-Meter reading...
What does it show on quality external wattmeter into a dummy load???

 

[Stuck in the mud]

Forget S-Meter reading...
What does it show on quality external wattmeter into a dummy load???

Thank you very much for the reply BJ On dummy load and external I am showing 13 watts dead key

 

[BJ radionut]

Sounds a little strong, however what does wattmeter show PEP modulation?
Been LONG time since I worked on one of those Panasonic Chassis but seem to remember about 5-7 watts DK and about 12-15 w PEP modulation provided good tube life. I never did that Plate Modulation mod unless customer insisted. Yes, sounded good if quality mic and tuned correctly, I did learn that it was harder on tubes...so trade off IMHO.
GL Enjoy ... Those were great chassis'
All the Best
Gary

 

[Stuck in the mud]

Sounds a little strong, however what does wattmeter show PEP modulation?
Been LONG time since I worked on one of those Panasonic Chassis but seem to remember about 5-7 watts DK and about 12-15 w PEP modulation provided good tube life. I never did that Plate Modulation mod unless customer insisted. Yes, sounded good if quality mic and tuned correctly, I did learn that it was harder on tubes...so trade off IMHO.
GL Enjoy ... Those were great chassis'
All the Best
Gary

Sorry this is a solid state radio It should do 4 watts AM 12 watts PEP SSB

 

[BJ radionut]

DAMN getting old!!!! Memory is Fubar...Now remember that one! Had one...
Lots of Info on forum about those:

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www.worldwidedx.com

upd858 Ferris 5500 (Robyn 520d) SSB distortion on RX and TX

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www.worldwidedx.com

DEAD Robyn SB 520D

I have a Robyn that my friend gave me (said get it out of here or tis going into the trash) that is dead. The channel readout is dark and no TX/RX. Any ideas as the radio is not in bad shape and i'd rather not scrap it.

www.worldwidedx.com

Here's the Chassis I remembered...DAMN!

 

[Lkaskel]

Thank you very much for the reply BJ On dummy load and external I am showing 13 watts dead key

That has the Uniden 858 board in it. A 13 watt carrier is way too high if that is an accurate reading. It really needs a full alignment but there are 2 main points to address here. Adjust VR-8 for no more than a 4 watt carrier (on AM and no modulation) as read on an accurate external meter with a dummy load. Adjust VR-12 to adjust the Robyn meter to match the reading of the carrier you set. That should address your question specifically.