Podcasting since 2005! Listen to Latest SolderSmoke

Sunday, April 21, 2019

A Beautiful Variable Capacitor (from Pete)


Is this a thing of beauty, or what?   Pete sent this to me back when I was having trouble finding a "smooth running" variable cap for my HRO dial receiver.  It has a standard Jackson Brother's reduction drive attached to the shaft, followed by a really cool gear arrangement.  Note the spring loaded teeth on the big gear -- that is to keep the gears tight when turning in both directions.  

As was the case with the HRO dial that Armand sent me, the beauty of this part will cause me to build something with it, really just for the purpose of putting it to use. We've been talking about double or triple conversion superhets with 100 or 50 kHz final IFs.  At those frequencies you can get good selectivity with LC filters.  As with the Drake 2-B.    Steve N8NM is sending me a dial that will go well with this part.  That will add to the already abundant mojo/juju.  I feel a VFO in the works.    Thanks to Pete for being so supportive of my luddite analogism.  

7 comments:

  1. Vietnamese Spam is my favorite.

    ReplyDelete
  2. She's a thing of beauty...

    ReplyDelete
  3. Not spam! My Vietnamese is a bit rusty, but I believe he is providing information on who planted the MALICIOUS CODE that made Pete's Si5351s drift!

    ReplyDelete
  4. Wow! The transmission in my Toyota doesn't have this degree of complexity. How is this mechanical monstrosity supposed to fit into our new digital world? Plug and pray, anyone?

    ReplyDelete
  5. Makes me wonder if he was targeted because of his time in the Service?

    ReplyDelete
  6. According to Google Translate, is IS SPAM! It is nothing but advertising for various translation services. Boo.

    ReplyDelete

Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column