[Premium-Rx] ITT Mackay 3020A Extender Card

[Ian Smith]

Hi. Just finished fixing an ITT Mackay Marine EB3026 (same as the 3020A but with a 6Khz filter after the 2nd mixer) with a synth fault. Obviously this is pretty tricky without the PCB extender card, I eventually found the right one at Mouser, (22 contacts 0.156" centres) part No. 574-3690. This took a while to track down as it seems to be a non-standard fitting
here in the UK, and may be an obselete type generally. Not cheap at £43.20 + shipping (for a simple PCB and a socket !!) but worth it to get the Mackay going again.
    Hope this post is of use to someone looking to repair this series of radios.
BTW, the Mackay is a superb set, even the lever-wheel tuning is nice - after a little practice...
And the fault ? a duff SN7402 in the minor loop divider board.
Thanks for all the interesting posts.
 
    73 to all
                  Ian  G6RHV


      
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