[Heathkit] SB-220 meter question

[Mark K3MSB]

OK, some confusion here amd I apologize for that.

 The info I posted as for the SB-200 meter was from my SB-220 folder.

I believe it's really for the SB-220 meters as I was working on a circuit
to use an HM-102 meter in a friend's SB-220 that had a bad meter in the
event he could not obtain a working SB-220 meter.    He did;  it wasn't
cheap.....

I measured:
   280 mV for full scall deflection
   1400 ohms measured resistance.

I computed:
Full scale deflection current = 0.28 / 1400 = 200 uA

My notes also reference a post by Carl (KM1H?) that says the meters are 200
uA, and I have a note indicating a third source says 200 uA.

I need to make better notes....

73 Mark K3MSB


On Sun, Aug 14, 2016 at 3:58 PM, Mark K3MSB <mark.k3msb at gmail.com> wrote:

> SB-200 Meters
>
> 280 mV for full scall deflection
> 1400 ohms measured resistance.
>
> Full scall deflection current = 0.28 / 1400 = 200 uA
>
> 73 Mark K3MSB
>
> On Aug 14, 2016 3:51 PM, "Ron Bussiere via Heathkit" <
> heathkit at mailman.qth.net> wrote:
>
>>
>> Hi. I was wondering if anyone had the following, about the 2 meters used
>> in the SB-220 amp:
>>
>> I know the P/Ns:
>>
>> 407-147 Plate current meter
>> 407-146 Multimeter
>>
>> I would like to know the specs. Nowhere in the manual is there a
>> description of the value.  They sure look the same, except for the face, of
>> course.
>> 0-1 ma or ?????
>>
>> thanks!
>>
>> ron
>> N4UE
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