[TMC] Fwd: FA TMC MMX-2 Exciter

[John Vendely]

Agreed.  This was one of the products that literally put TMC on the road to
ruin, the other being the DDRR-10 receiver.  The MMX-2 has a complex,
unreliable cascaded double-mix-divide analog synthesis arrangement. It's
poorly shielded, very tweaky, quickly drifts out of alignment and generates
horrendous spurious outputs when not set up just perfectly.  Also has a
number of unavailable ICs and transistors, particularly the old planar RF
transistors in the output stage.  It's an interesting piece of gear, but not
up to TMC's earlier standards.  Incidentally, I believe the design was
mostly done under contract by a group at the University of Arizona (I think
it was U of A, anyway).

73,

John

----- Original Message ----- 
From: "Peter" <peterann at goes.com>
To: <tmc at mailman.qth.net>
Sent: Tuesday, November 08, 2005 12:17 AM
Subject: Re: [TMC] Fwd: FA TMC MMX-2 Exciter


> MMX-2 is a PLL boat anchor that couldn't survive the cracks in Fenimore
> Road sidewalk.  We used to kick it to settle the edgecard connnector
> boards.
> Worth about fifty bucks.  Its only advantage was ISB and pilot carrier on
> SSB.
> ______________________________________________________________
> TMC mailing list
> Home: http://mailman.qth.net/mailman/listinfo/tmc
> Help: http://mailman.qth.net/faq.htm
> Post: mailto:TMC at mailman.qth.net
>