sparky wrote:
See this picture HR)-60

http://www.universal-radio.com/CATAL...xvr/HRO60.html

it has a meter with the zero on the left.

On Dec 21, 7:39 pm, Kenneth Scharf wrote:
sparky wrote:
Why is the meter 'zeroed' against the right peg, is it broken?
Or did National design it that way because they had a backwards meter
circuit that pulled full current with zero signal?
This is a backward meter by National. The meter deflects left when
current flows.
The radio must have had a backwards meter amplifier then. Weird.
Guess one could design a proper solid state amplifier to make it work,
but you'd have to 'zero' the meter at full scale with no signal.

I guess the meter will drift to the right when power is applied to the
radio with no signal.

Weird. I'm going to have to find the schematic to the HRO and figure it
out.

Kenneth Scharf wrote:
sparky wrote:
See this picture HR)-60

http://www.universal-radio.com/CATAL...xvr/HRO60.html

it has a meter with the zero on the left.

On Dec 21, 7:39 pm, Kenneth Scharf wrote:
sparky wrote:
Why is the meter 'zeroed' against the right peg, is it broken?
Or did National design it that way because they had a backwards meter
circuit that pulled full current with zero signal?
This is a backward meter by National. The meter deflects left when
current flows.
The radio must have had a backwards meter amplifier then. Weird.
Guess one could design a proper solid state amplifier to make it work,
but you'd have to 'zero' the meter at full scale with no signal.

I guess the meter will drift to the right when power is applied to the
radio with no signal.

Weird. I'm going to have to find the schematic to the HRO and figure it
out.
I meant drift to the LEFT when power is applied.