Thursday, November 30, 2017

VK3YE QRP by the Bay Goes VHF/UHF

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Peter Parker again hosted the VK3 radio amateurs.  This time the event fell on VHF/UHF Field Day weekend.   So Peter and his friends went ...
Wednesday, November 29, 2017

Listening for Your Own Signals on the Long Long Long Path

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I heard some guys talking about this on 40 SSB last night.  A very cool use of the bidirectional pattern of the W8JK beam.  From:   ht...
Tuesday, November 28, 2017

Videos of iPhone Box DC Receiver

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These are just a couple of short videos that I made for my nephew before sending him this receiver.  As you can hear, deafness is ...
3 comments:
Saturday, November 25, 2017

Polyvaricon Variations -- Polyvaricons Are Not all The Same

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When I built the first prototype of the iPhone DC receiver, I just reached into my junk box and used a polyvaricon capacitor for the main...
2 comments:
Wednesday, November 22, 2017

iPhone Direct Conversion Receiver with Variable Ceramic Oscillator

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A while back Bob N7SUR got us talking about winter projects.  Receivers.  Of course, Pete and I quickly went down different paths.  Pet...
21 comments:
Saturday, November 18, 2017

China and SETI: What Happens if China Makes First Contact?

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Here is a really amazing article from The Atlantic.  It is very thought provoking.  Mind blowing.  Strongly recommended.  You can read ...
Friday, November 17, 2017

Jeff Murray's Grumpy Audio Guy from 40 meters

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I've talked to this guy several times.  He usually waits until I'm testing a new rig.   https://www.facebook.com/6sj7jeff/videos/1...
Saturday, November 11, 2017

Amazing Homebrew/Boatanchors QSOs on 40 --Six solder melters in a row!

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Al W8VR After a day of happy tinkering with the Direct Conversion receiver I've been working on, I turned off the soldering iron an...
1 comment:
Wednesday, November 8, 2017

Beautiful QSL by Jeff Murray K1NSS

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Here's a reminder of the amazing art work of Jeff Murray K1NSS.  You can have him draw a QSL for you:   Go here: https://www.jeffk1...
1 comment:
Monday, November 6, 2017

Jan's FB Slovakian SMD TIA Boards

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Hello, I have put up my SMD version of the TIA amplifier boards online, in case someone wants it. The files are here: http://...
Sunday, November 5, 2017

Peter Sripol Takes Off In His Homebrew Airplane

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7 comments:
Saturday, November 4, 2017

Termination Insensitive Amp Boards from VU3ZMV -- Eagle Files

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Bill:  Here are the eagle file data for the TIA, that  I love to use as incorporated in Farhan's ubitx. The TIA , I tried...
1 comment: