[Amps] Ferritronics FL2200m DBM for 4CX10,000amp

[Steve Thompson]

Don Moman VE6JY wrote:
> Asking on behalf of a friend who is looking for a source of this IC ...
> I'll pass any info to him, thanks. 
> 
> 73 Don 
> 
> VE6JY
> 
>  
> 
> Am trying to find a double balanced mixer that was made by Ferritronics
> many years ago, an FL2200M that is an 8 pin package in a metal case. Do
> you have any ideas as to a replacement for it? As far as I can tell the
> company is defunct! I am getting desperate!!   Its a double balanced
> mixer from the early 70's and it was very popular at the time. I am
> trying to find a modern replacement for it if possible. This is out of
> the exciter for our 5KW SSB transmitter.  It is an Aerocom 1330 and it
> uses a 4CX10,000 for its single final. 
Use a 47R resistor and diode probe to measure the LO level, and then map 
the pin connections. I'd be very surprised if Mini-Circuits didn't have 
something that will drop in and work fine. I've always found their apps 
guys very helpful.

Steve