Skip to search.
SWLRetro75
  • Members Only
  • Post
  • Files
  • Photos
  • Links
  • Database
  • Polls
  • Members
  • Calendar
  • Promote
  • Groups Labs (Beta)
  • Chat

Group Information

? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Real people. Real stories. See how Yahoo! Groups impacts members worldwide.
Notice  Upcoming calendar upgrade: Yahoo! Groups calendars are being upgraded to a much improved version. You may not have access to the calendar (for up to 24 hours) when this group is upgraded. We sincerely apologize for this inconvenience.

Home

  

Activity within 7 days:

1 New Member - New Questions

Description
























Friendly self help group for builders of the Retro 75 AM Transceiver kit launched by Dave Benson K1SWL of Small Wonder Lab in March 2010

- Board size 3.5” x 5.27”
- Tunable 80/75M AM Receiver- 50 kHz, selectable, varicap-tuned
- 4 kHz receiver IF crystal filter at 6 MHz
- Room-filling speaker volume from LM386
- Crystal-controlled Transmit- 3885 kHz supplied
- Board pads for 2nd crystal frequency, remotely switchable
- Transmitter output power: 2.5W carrier/ 8W peak
- Transmit and Receive ALCs
- Uses readily-available and inexpensive dynamic mics
- Built-in Alignment function

Most Recent Messages

  (View All)
(Group by Topic)
Search:
Advanced
    Start Topic
CQ CQ CQ
de W1RKW Where is everyone?
Posted - Sun Apr 29, 2012 10:33 am
 rwalter7
Offline Offline
Send Email Send Email
Wall-Wart Search for Retro's
Jameco 319920 discontinued. Jameco alternate N.G., per WEB Next: __________________________ Tnx, Jim C.
Posted - Mon Mar 5, 2012 9:53 pm
 kc8zme
Offline Offline
Send Email Send Email
Re: Build Retro 40 from Retro 75 kit?
Larry- Thanks! Yes that was allot of work. Many more parts than I thought. I did see a prior posting that seemed to say the VFO mod would work "as is" on a
Posted - Sat Feb 25, 2012 4:53 pm
 wheeler2roh
Offline Offline
Send Email Send Email
Re: Build Retro 40 from Retro 75 kit?
... SNIP ... Larry, That was a bunch of work! Maybe I will see you tomorrow at the Georgetown Swapfest. Jim WD5JKO Round Rock, Texas
Posted - Sat Feb 25, 2012 2:19 am
 jcandela@...
jcandela...
Offline Offline
Send Email Send Email
Re: Build Retro 40 from Retro 75 kit?
Gang: I have compared the diagrams and parts lists for the Retro-75 and the Retro-40, and there seems to be these differences (If I haven't missed
Posted - Fri Feb 24, 2012 5:58 pm
 Larry KA5T
ka5tlarry
Offline Offline
Send Email Send Email
Add SWLRetro75 to your personalized My Yahoo! page Add to My Yahoo! XML What's This?

Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2012 23 17 1 1
2011 61 28 49 46 40 18 71 49 10 11 1 24
2010 52 106 51 21 23 7 29 65 82
What is Yahoo! Answers?

Yahoo! Answers, a new Yahoo! community, is a question and answer exchange where the world gathers to share what they know...and make each other's day. People can ask questions on any topic, and help others out by answering their questions.

Hide this tip
What is Yahoo! Answers?

Yahoo! Answers, a new Yahoo! community, is a question and answer exchange where the world gathers to share what they know...and make each other's day. People can ask questions on any topic, and help others out by answering their questions.

Hide this tip

Questions in Games & Recreation > Hobbies & Crafts

  • Questions are currently unavailable.

Want to help answer other questions? Go to Yahoo! Answers
Copyright © 2010 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines NEW - Help