[aprssig] Re: aprssig Digest, Vol 21, Issue 27

[Stephen H. Smith]

mconner1 at gmail.com wrote:
> I wonder if there was a design change midway through production of
> this unit.  I have used the VC-H1 with NiMH cells with pretty good
> results on a number of balloon flights of > 3 hours.
>
> The batteries are put in the holder with the tops all in one
> direction, which makes me think they are wired in parallel and using a
> step-up voltage regulator.
>
> 73 de Mark N9XTN
>
>
>   
>> I have found this issue very frustrating with the Kenwood VC-H1 SSTV
>> device. It
>> runs on 4 AA cells (i.e. 6VDC) which it eats in about 2 hours. I would
>> love to use
>> rechargeable NI-Cd or NiMH cells in it but they simply won't work -- it
>> thinks that at
>> at 4.8 VDC are already dead.
>>     
>
> _______________________________________________
>   
It definitely uses them in series.  The holder is wired in series 
internally (I've disassembled my two VC-H1s several times)  The external 
supply and coax input are 6VDC.
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