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Friday, January 2, 2015

N2HTT's MMM Makes Contacts (the little rubber feet are important)


Hi Bill and Pete,

Some further adventures of the Michigan Mighty Mite - I have added several amenities since first oscillation:
- a low pass filter on the output
- bnc connections for antenna and a rcvr, and a tx/rx switch
- coaxial connector for power
- stereo jack for the key
- LED tx power indicator, and
- little rubber feet

Of all of these, I cannot sufficiently emphasize the importance of little rubber feet. A project just cannot be considered complete without them.

More pictures and details of the low pass filter are on my blog at http://n2htt.net

I've been heard on RBN on 40m several times, but haven't gotten any replies to calling CQ. This weekend was the December SKCC Sprintathon, and I pretty conclusively proved that if there are any other signals on the band the MMM is not likely to be heard.
After the contest ended, I posted on the SKCC sked page, and two stations, KC9W and KT4TN agreed to listen for me. We made successful contacts on 7059 kHz. Both stations are in Tennessee, and coincidentally both ops are named Randy.
As Bruce KK0S observed in his report, the rig seems to operate about 1 kHz above the nominal crystal frequency, as confirmed by both Randys.
I've had a lot of fun with this little rig, it's a keeper.
Keep up the great work with the podcasts, and Happy Holidays

73
Mike N2HTT



Our book: "SolderSmoke -- Global Adventures in Wireless Electronics" http://soldersmoke.com/book.htm Our coffee mugs, T-Shirts, bumper stickers: http://www.cafepress.com/SolderSmoke Our Book Store: http://astore.amazon.com/contracross-20

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