Tuesday, November 15, 2022

Amazingly Cool MONTV Video on Direct Conversion Receivers with Glue Stick PTOs

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I think this is one of Nick's best videos. And he has made a lot of good ones.  https://www.youtube.com/watch?v=xl9dnajkYO0 This is a re...

A Treasure Trove of Permeability Tuned Oscillator (PTO) Info and Links (Plus Info on Direct Conversion Receivers)

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There is really great info on this page , and even more in the links at the bottom of it.  While the page is about PTOs, the links often dis...
1 comment:

Dhaka Jack Moves to France

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Jack Welch AI4SV has been an important member of the SolderSmoke community for many years .  I remember fondly our Straight Key Night CW con...
1 comment:
Wednesday, November 9, 2022

Direct Conversion Receiver -- Simple 2-Diode Mixer Defeats Radio Marti, but Diode Ring is the Best

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  Here is another update on Direct Conversion receiver construction. In Northern Virginia we get very strong signals from the Radio Marti t...
1 comment:
Wednesday, November 2, 2022

Understanding a Very Simple Two-Diode Mixer

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  Take a look at the simple little mixer above.  I think I first saw it in SPRAT.  Thinking that it was really just a simplified version of ...
8 comments:
Friday, October 28, 2022

SolderSmoke Podcast #241 Mars, Direct Conversion, PTOs and Glue Sticks, Anniversary of the BITX20, Multus Proficio SDR, Boatanchor Station, MAILBAG

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The board I use to test DC RX circuits   SolderSmoke Podcast #241 is available Audio (podcast):    http://soldersmoke.com/soldersmoke241.m...
5 comments:
Saturday, October 15, 2022

DC Receiver: 100db Gain? Diplexer? VFO in a box?

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Here is a progress report on Direct Conversion Receiver developments. Dual Tuned Circuit, Diode Ring with Diplexer, PTO VFO from Farhan...
8 comments:
Wednesday, October 12, 2022

World's Most Interesting Man on PTOs and Glue Sticks

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  I mean, if they are good enough for the Dos Equis guy, maybe we should give them a chance.  (134) Glue Sticks! Chap Sticks! Paul Clark’s D...
1 comment:
Tuesday, October 11, 2022

SolderSmoke FOREVER! Archived in the WayBack Machine

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  There were recently some stories about an effort to put on the Internet Archive recordings and other material from the history of ham radi...
Monday, October 10, 2022

Listening on 40 with a Glue Stick PTO in a Direct Conversion Receiver; Some PTO History

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Thanks to Paul WA1MAC for this idea.  He first shared it with us via the SolderSmoke mailbag in 2008!  Sorry it took so long for me to try o...
1 comment:
Sunday, October 9, 2022

Paul Clark's Dollar Store PTOs made with Glue Sticks or Chap Sticks

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A few weeks ago Pete Juliano and I got some e-mails from Paul Clark about his use of Chap Sticks and Glue Sticks (acquired at a Dollar Store...
18 comments:
Friday, October 7, 2022

How the Diode Ring Multiplies by 1 and -1 -- "The Secrets of the Diode Ring" -- Plus another Bandsweep with the DC RX

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A deeper look into how the Diode Ring detector works: "the particular go of it." Here I rely on a wonderful diagram from the RSG...
8 comments: