Harvey Wells TBS50D
G4OJY:
I've just imported a Harvey Wells TBS50D transmitter from the US. The manual shows that the correct PA tube is an 807, whereas mine has a 6146 fitted. Does anyone know if this was an official modification or not, has it featured in any old radio magazines in the US?
Thanks
Andy G4OJY
W3GMS:
Hi Andy,
I have never heard that Harvey Wells produced any of the TBS series with a 6146 final tube. It is more likely that someone who previously owned the rig did the conversion.
73,
Joe-GMS
MikeKE0ZUinkcmo:
Agreed, I've never seen one with anything other than an 807 for the PA.
N3GTE:
Hi Andy
What you are looking for is this: https://www.swedeart.com/harvey/html/bulletins.html Check out #15. Rumor has it that it doesn't make much of a difference between the 807 or 6146.
Cheers
Terry N3GTE
Opcom:
It almost seems the 6146 was made to honor the 807's ubiquitous usefulness as form factors and vacuum tube technology changed.