LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Report Post  
Old November 12th 08, 04:35 AM posted to rec.radio.amateur.homebrew
external usenet poster
 
First recorded activity by RadioBanter: Nov 2008
Posts: 38
Default Homebrew breadboard xmtr

Hi,
I've gotten far enough along with this project to where I'm ready to
toss it out for public scrutiny, so have at me, guys.

I'm a receiver guy - never built a tube transmitter from scratch and
this is my first go. My goals were, in no particular order, to build
something with a early 30s breadboard look, xtal control, 40/20 meters
primarily - 80/30 as bonus, moderate power for getting on the air
barefoot while not overpowering a future amp idea...and of course using
accessible parts.

This is sort of my compilation of ideas from old QST articles. Robbed
ideas from this and that to make them fit. I made some major boo-boos
at first but I think I finally have them sorted out. Something that
dawned on me a little bit slowly is that none of those old xmtrs were
set up to operate 40 meters with a 7 Mc xtal. Much of the emphasis was
on double this/double that. Nowadays we have 7 and 14 Mc fundamental
xtals abounding so I went the route of reinventing the wheel so to speak.

The rig is working at this stage...at least straight thru on 40.
Waiting for some other bits and bobs to carry on to other bands. The
note sounds good and its nothing I'm reluctant to put on the air. On
the other hand its a massive amount of wood and metal for a measly 5 or
6 watts A little slatboard 6V6 chirper would have been much easier.

Anyway, I'm not a veteran with old xmtrs so I'm putting it out for
comments, questions, critiques, etc. Flame suit is handy!

Schematic:
http://i132.photobucket.com/albums/q...hema111108.jpg

View:
http://i132.photobucket.com/albums/q...r/Dscf1436.jpg


-Bill WX4A/KP4
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
FA:Breadboard Transmitter,Meissner 80M Coils +more Heytubeguy Boatanchors 0 June 12th 05 02:51 AM
FA: Breadboard Recvr 3 Tube Heytubeguy Boatanchors 0 May 29th 05 06:53 PM
FA: Breadboard Recvr 3 Tube Heytubeguy Equipment 0 May 29th 05 06:53 PM
FA: Breadboard Recvr 3 Tube Heytubeguy Homebrew 0 May 29th 05 06:53 PM
FA..JAMECO BREADBOARD [email protected] Boatanchors 1 February 10th 04 04:41 PM


All times are GMT +1. The time now is 10:06 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017