The AM Forum
May 07, 2024, 09:08:29 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Building my first regenerative RX  (Read 6522 times)
0 Members and 1 Guest are viewing this topic.
N1ESE
Guest
« on: February 01, 2008, 02:27:03 PM »

OM's, I'm looking to build my first regen and wondering if the RX in the link below would be a good one to start with for a tube newbie like me?  I like this article because it's very detailed and looks like it'd be easy to build.  Would I be able to find the octal socket, bases, and tube?
 
http://www.mines.uidaho.edu/~glowbugs/12at7_regen.html
 
Thanks
 
- JT
Logged
W4EWH
Member

Offline Offline

Posts: 825



« Reply #1 on: February 01, 2008, 06:43:27 PM »

JT,

I suggest you obtain a commercial receiver from the maritime service and start with that, since they're probably very stable and easy to use, and could be adapted easily for 160 and/or 80.

FWIW. YMMV.

73, Bill W1AC
Logged

Life's too short for plastic radios.  Wallow in the hollow! - KD1SH
W1UJR
Guest
« Reply #2 on: February 01, 2008, 07:16:43 PM »

Hi JT,

I love regens, very fun to use.
Nothing like the "pop" as the set goes into regeneration.

The 12AT7 project looks like a great thing to get your feet wet with.
Most parts should be readily available, let me know if you need anything, I've some deep junk parts boxes.

Speaking of regens, if you get a chance to pick up a Radiola III, don't pass it up.
Last fall I had a blast with a Radiola III, and you can find less than mint examples pretty cheaply.

I should also mention that Jan 31 was the anniversary of the death of the man credited with invented the regenerative circuit, Major Howard Armstrong.

Armstrong's original regen and copies of the patents for the circuit can be found here -> http://users.erols.com/oldradio/eha1.htm.
Logged
Carl WA1KPD
Contributing
Member
*
Offline Offline

Posts: 1637



« Reply #3 on: February 01, 2008, 07:28:38 PM »

I have built a number of regens and think they are fun. It amazes me that such a simple piece of electronics can work.

THere is a Yahoo group "regenrx · Regenerative Receiver Group"  which has a fairly active mail list and some good information including pictures and schematics..

If you do build the 12AT7 put the power supply on another chassis and feed only DC into the rcvr. Make sure that  you have a metal front panel.

Good luck. They are cool radios

KPD
Logged

Carl

"Okay, gang are you ready to play radio? Are you ready to shuffle off the mortal coil of mediocrity? I am if you are." Shepherd
WU2D
Contributing
Member
*
Offline Offline

Posts: 1797


CW is just a narrower version of AM


« Reply #4 on: February 02, 2008, 09:13:47 AM »

JT,

Regens are great fun to build and there is nothing like listening to K4KYV on a regen. The other satisfying thing about them is they basically all "work" and will pull in stations. From the simplest one tuber like the Morgan (attached: from the Boy First Book of Radio and Electronics) to the two tube jobs like the Twinplex and Dorle, to the fancy TRF regens, you will be surprised how much you can get out of them.

Tips on improving them take a lifetime to implement. I am on my 5th regen and I turned 50 last year.

I am always putting my two tube regen against my R390A on 80M CW and I have yet to see a case where it can not hear a weak signal as well or even better!


73's Mike WU2D


* REGENRX.jpg (272.39 KB, 2000x1556 - viewed 629 times.)

* MorganMOdified.jpg (47.12 KB, 519x296 - viewed 553 times.)
Logged

These are the good old days of AM
Pages: [1]   Go Up
  Print  
 
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone © 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.052 seconds with 18 queries.