We have a winner! Actually three winners George K3GP, Duane, N9DG and
Don, NN8B.
Yes, the MBD-101 is a discrete schottky diode.
So the Cosair was the first Ten-tec radio to use a schottky diode
ring mixer.
By 1986 TT had moved to quads rather than discrete schottky diodes in
the Argosy 2 and Corsair 2.
Many thanks to all for this info.
Why? That'll be another post!
On May 20, 2007, at 1:11 PM, George K3GP wrote:
> Kevin Purcell wrote:
>> Excellent. Thanks Steve for that data point. And Don, NN8B, who
>> replied too. Both have the Corsair 2.
>> So they had switched by 1986.
>> Anyone with an original Corsair (Corsair 1, so to speak)? I think
>> that might be the rig they made the switch to schottky diodes.
>> It would just take a second to check the schematic in the manual
>> on the RF Mixer board :-)
>
> My original corsair manual lists the mixer diodes on the RF mixer
> board (D9 thru D12) as MBD-101 which checks out to be 7v low noise
> shottky diodes.
>
> 333-3333
> George K3GP
>
--
N7WIM / G8UDP
Kevin Purcell
kevinpurcell@pobox.com
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