[TenTec] Station power supply??

[Carl Moreschi]

Any 12 volt radio I have ever seen has V- and ground connected together. 
  I strongly suspect almost all stations have ground and V- and coax 
shield connected in one way or another.

Carl Moreschi N4PY
121 Little Bell Dr.
Hays, NC 28635
www.n4py.com

On 9/6/2012 8:49 AM, Chuck N4XS wrote:
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
> Moreschi
>> Subject: Re: [TenTec] Station power supply??
>>
>> Looking at my schematic for my Astron 35M, it shows ...
>>    ...  the V- side of 13.8 volts connected to chassis ground...
>> ... Now, our station ground is supposed to also connect to our home wiring
>> ground.  If this is so then V- and the green wire ground are common once
> we
>> connect a radio to any power supply and ground the ground log on the radio
>> to station ground.
>>
>> So what's the issue?
>
> I won't say there is an issue that necessarily needs addressing.  If you
> aren't having any problems then you aren't having any problems. But ground
> wires and bonding wires should not normally carry any current, and
> connecting BOTH ends of a ground or bonding wire in parallel with a current
> carrying conductor causes the ground or bonding wire to also become a
> current carrying conductor.
>
> Is your radio chassis ground connected to V-?  If ground and V- are
> connected at the power supply, then they really should be isolated at the
> radio.
>
>
>
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