Saturday, April 30, 2016

KC9KEP's Superhet Receiver with HOMEBREW 455 kc IF Transformers

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No store-bought 455 kc IF cans for Big Nick!  FB OM.  Great stuff. We have featured Big Nick's beautiful work twice before: htt...
Friday, April 29, 2016

Reduction Redux: Searching for Some Smooth Spin

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OK, here is yet another picture of my Mighty Midget's Mate receiver, this time with yet another main tuning dial. I gave up on the la...
Tuesday, April 26, 2016

Always Listen to Pete! Second Thoughts on the S38-E

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After working a bit on the Hallicrafters S38-E receiver, I am forced to admit that Pete was probably right about this receiver when he wa...
8 comments:
Saturday, April 23, 2016

A Reduction Drive for the Mighty Midget's Mate Receiver

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This morning I put a reduction drive onto the main tuning cap of my 6U8 Mate for the Mighty Midget receiver.  Before I had been directly ...
4 comments:
Wednesday, April 20, 2016

Meeting up with ARRL CEO Tom Gallagher, NY2RF

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On April 12, Tom Gallagher NY2RF was in DC and was kind enough to make some time in his schedule for us to get together and talk about rad...
3 comments:
Tuesday, April 19, 2016

Pigs, Lipstick, and my old Hallicrafters S38 "Widow Maker"

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I blame Grayson for this.  After getting my old 6U8 superhet running nicely on 80 and 40, my attention turned to an old Hallicraft...
9 comments:
Monday, April 18, 2016

Wooden Boats, VFOs and PTOs -- Recovering Lost Arts

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Photo from radiomuseum,org I couldn't resist posting another great message from Rick Campbell, KK7B.  This one was sent by Rick to...
1 comment:
Sunday, April 17, 2016

K.P.S. Kang's Pixer Superhet

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K.P.S. Kang (VU2KR and VU2OWF) has been contributing ideas and circuits for many years from his QTH in Punjab India.  He is the source o...
1 comment:
Friday, April 15, 2016

WSPR Party Balloons Make it Across the Pond

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    Hans Summers April 15 at 11:25am   VE3KCL/QRP Labs S-9 balloon finally reached Europe! What a crazy way to cross the Atlantic...
3 comments:
Thursday, April 14, 2016

My Kind of Math! The Wooden Fourier Transform Machine

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fourier analiser from Gymnasiumnovum on Vimeo . Mixer math with plywood and gears. http://www.instructables.com/id/Plywood-Math-Mach...
Wednesday, April 13, 2016

VE3KCL Balloon makes "several loops around Greenland"

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Oh, I really want to do this.  We had a bunch of balloons for my daughter's birthday and I found myself trying to guestimate how much ...
Tuesday, April 12, 2016

Some Thoughts on Noise and Receiver RF amplifiers from Scotland (and listening to sun noise on 2 meters!)

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Bill, Just listened to the latest SolderSmoke podcast where you asked why is it that an RF amplifier may be required on the higher bands...