[Mgs] Vintage Radiio Restoration

[Max Heim]

When I have seen polarity switches on old radios, they have been labelled as
such. But what he was describing sounds like the trimmer. The polarity
switch is usually a two position slider, like a DIP.



on 8/29/07 2:54 PM, Rick Lindsay at rolindsay at yahoo.com wrote:

> Old AM radios also have antenna trimmers on the
> chassis.  They are used to tune the radio to the
> antenna.  If you find that is what you have, just
> power up the radio, tune a weak station and gently
> turn the trimmer back and forth for the loudest
> signal.  Of course, if it is a polarity switch DON'T
> TOUCH IT. :-P
> 
> rick / amateur radio geek
> 
> --- Wilkmanracing at aol.com wrote:
> 
>> I am privileged to own a 1960 MGA that has been in
>> my family since  new.
>> While I still have the radio installed by the dealer
>> (Johnny Lail,  Glendale,
>> CA), it has not been in the car for a number of
>> years.  Now I'd  like to have it
>> restored so I can return it to its rightful place in
>> the  dashboard.  It's a
>> Philco, five pushbutton AM radio.  All the  knobs
>> and buttons are there.  The
>> chrome face would need to be replated and  the
>> plastic knobs/buttons would need
>> to be cleaned.  I don't know if the  radio works,
>> but I assume it needs an
>> overall tune-up.  There is a  screwhead switch on
>> the side of the radio that I
>> presume is used to switch it  from positive to
>> negative ground.  My car is
>> positive ground, as supplied  from factory.  Can
>> anybody recommend a vintage radio
>> restoration specialist  for my radio?  I live in
>> Riverside, CA, but don't
>> mind shipping it anywhere  in the USA.
>>  
>> Bill Wilkman


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires