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Saturday, September 22, 2018

Pete's New Sudden Transceiver

Check it out!  Note the Juli-yellow front panel color.   Featuring FT-8 and WSPR capability.  Go Pete!

Sunday, September 16, 2018

Nightfire Electronics

Some interesting items in their catalog.  I ordered their NP0 capacitor kit.   I have to stock up in order to avoid being forced into the digital oscillator morass.

They also have crystals for the ham frequencies.  

Please tell them that SolderSmoke sent you. 

WB8VGE on QSO Today -- QRP, HB, Boatanchors, Drift, Solar Power


Eric 4Z1UG has a really good interview with Mike Bryce, WB8VGE. 

Listen here:

I've been a big fan of Mike's for many years. I've talked to him on the air a couple of times.  I liked his QRP column in 73 magazine.  I share his enthusiasm for Boatanchor rigs.  He is a fellow member of the QRP Hall of Fame (who, like Pete and me, at times seems to be pushing the QRO envelope).  I like his approach to solar power. He too has been bothered by appliance ops who complain that his boatanchor rigs are 150 hertz "too low."  

His attitude toward contesting is similar to mine -- I may be more opposed than he is.  I think contesting encourages a kind of harshness and competitiveness that runs contrary to the spirit of the Radio Amateur's code. 

I got a chuckle about Mike's claim that he almost Worked All States in RECEIVED Official Observer reports. And that he at one point owned THIRTY  104s.  

Mike's observations on the dumbing down of ham radio and on the social (psychological?) problems of 75 meters ("net starting in 5 minutes!"  "QRP not allowed on 75") are sadly on the mark. 

Mike's hint about using a white-out pen to spruce up the front panel of an old Drake radio adds a new household/office material to our rig-fixing arsenal. 

Eric's comment on the Lafayette Catalog resonated with me.  I used to read it too. 

I hope Mike decides to get on the air more frequently.  Just avoid 75 meters and 7.200 MHz Mike. 

Thursday, September 13, 2018

KD4PBJ's PTO "Turtle" Receiver


Here’s my newest creation. 
It’s a PTO tuned receiver for 40 meters and uses the WA6OTP PTO circuit I built a couple years back. I believe I had sent you a picture of it then. I bought the tuning assembly from him which is the aluminum bracket, acrylic tube fitted with Pem nut, and brass screw.  The circuit uses a J310 as oscillator transistor and several bipolar transistors for amplification and buffering. 

This feeds a ADE-1 mixer, mounted on a little breakout board I bought from RfBay. 
Years ago I had good luck building the Rock Bending Receiver from the ARRL handbook, so I took the audio chain from it and incorporated it. It uses a TL072 and a LM 386. 
As of now I haven’t needed any kind of front end filter, but am working on a 40 meter bandpass filter from Hans Summers that I will put on the input just in case it’s ever needed. 
I had been looking for an easy enclosure and found this in one of the break rooms at work. An empty Christmas nut tin. 
The PTO screw goes in and out like a turtle sticking its head out of the shell, plus my 13 year old son Alex’s favorite animal is a turtle. So it goes. 


Monday, September 10, 2018

N2CQR Wins a Contest AGAIN!

Pete N6QW suggested I do a blog post on this.  

This past weekend I dusted off my old scratch-built, all-analog, no-chips BITX20. (THREE CHEERS FOR FARHAN AND HIS BITX DESIGN!)   I hooked it up to my trusty CCI .1KW (note decimal point) amplifier and my new 135 foot store-bought doublet.  This all happened just as the Worked All Europe  DX contest was kicking off, with lots of activity on 20.   TRGHS.  I was in.  My contest operating style was in the category of "relaxed-casual-noncompetitive." I took a lot of breaks.  In fact there were more breaks than non-breaks. You have to pace yourself in the contest world.  

My results: 


P3X might not count because, you see, Cyprus is considered to be in ASIA.  Really? 

Anyway, I 'm assuming that I am the winner in the homebrew, discrete component , all-analog transceiver category.  Woo Hoo!  

The contest rig is pictured above.  Before you point to the glowing numerals and cry foul, realize that the little Altoids box between the two speakers holds a San Jian frequency counter that was deliberately kept OUTSIDE the BITX box.  So it is more of an outboard accessory.  I can run the BITX 20 without the digital assist -- I have an old fashioned non-digital dial pointer to indicate frequency.  The "Low - High" switch you see switches the VFO from the low portion of the 20 meter phone band to the higher part of the band.   The box below the BITX 20 holds the uBITX. 

Seriously though, I was quite pleased with the performance of the doublet.   

Sunday, September 9, 2018

EF Johnson's 50th Anniversary Speech. Very nice radio history

Thanks to W0VLZ for this wonderful 13 minute recording of Edgar F Johnson's 50th Anniversary speech.  There is a lot of great radio history in this speech.  Highly recommended. 

Just click here to listen:

EF Johnson's hometown bio:
Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column