UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Other Discussions > Homebrew Equipment

Notices

Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members.

Closed Thread
 
Thread Tools
Old 30th Jan 2023, 1:10 pm   #1
lesmw0sec
Octode
 
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
Posts: 1,498
Default TRF regenerative receiver

In an idle moment, I decided to go back to my roots and build a 3-valveTRF regen. receiver, mainly from bits lying around. The tuning drive may be recognised as coming from a defunct Yaesu tranceiver. The regeneration is via a cathode tap on the detector tuning coil. As the tetrode OP bottle did not have the same gain as the pentode I recalled from early days, I cheated a bit by including a transistor to make up the necessary gain.
Quite pleased with the results, particularly after dark when MW opens up!
Attached Thumbnails
Click image for larger version

Name:	IMGP0937.jpg
Views:	106
Size:	55.2 KB
ID:	272421   Click image for larger version

Name:	IMGP0935.jpg
Views:	111
Size:	93.5 KB
ID:	272422   Click image for larger version

Name:	sparks.jpg
Views:	138
Size:	70.4 KB
ID:	272423  
lesmw0sec is online now  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 10:46 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.