[AMRadio] New Product Announcement: 'Retro-75'

Mike Duke, K5XU k5xu at comcast.net
Sun Mar 14 20:39:24 EDT 2010

Thought some of the people here would be interested in this one.

----- Original Message ----- 
From: <k1swl at earthlink.net>
To: "QRP-L" <QRP-L at mailman.qth.net>
Sent: Sunday, March 14, 2010 6:00 PM
Subject: [QRP-L] New Product Announcement: 'Retro-75'

Sorry to keep folks waiting- I returned home this afternoon from a 
great weekend at the MassCon QRP Convention.
This one's a bit 'off the beaten path'. The product is a 75-meter AM 
transceiver board kit,. It measures 3.5" x 5.27" and runs 2.5W 
carrier/8W peak.  It's supplied with a 3885 kHz transmit crystal, 
although a number of other crystal frequencies are available from both 
US and European suppliers. Its receiver is tunable over a range of 
45-50 kHz, and both receiver and transmitter functions contain ALC 
circuitry to maintain decent audio quality.
There's a story here.  I'd spoken about the concept at Atlanticon a 
while back, but hadn't had a chance to follow up until recently. Real 
life- including a new home and family issues - intervened. I refused 
to let this frankly nostalgic  concept  die, though.  After 5 years 
away from the creative side of amateur radio, it's nice to be back!
It's at:  http://smallwonderlabs.com/Retro-75.htm
That URL contains a link to assembly instructions for the Retro-75.
.......and on to the next project!
73- Dave Benson, K1SWL
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