Warning: Creating default object from empty value in /homepages/11/d132647312/htdocs/Amfone/mkportal/include/SMF/smf_out.php on line 47
Knights Radio Broadcaster




 
The AM Forum
June 05, 2023, 02:46:46 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: Knights Radio Broadcaster  (Read 644 times)
0 Members and 1 Guest are viewing this topic.
g4jqt
Member

Offline Offline

Posts: 4


« on: March 06, 2023, 04:34:05 AM »

Does anyone have the details of the impedance matching for T1 and the turns ratio/inductances of L1 in the Knights Radio Broadcaster? There seem to be various versions of this design produced by Knights (all appear to be potential death traps!) and I wonder if anyone has the specifications of these components.

I'd like to think that the design gave excellent results and was based designed by the best in the business, despite the obvious cost restrictions, and I would like to make a copy, although a mains isolating transformer for our 240VAC would be necessary.

I did have a search in the forum but didn't find any reference to it.

Thanks.
Logged
W1GFH
Member

Offline Offline

Posts: 18


« Reply #1 on: March 06, 2023, 12:17:26 PM »

This site is pretty helpful:

https://www.knightkit.com

Specifically...

https://www.knightkit.com/mysteryparts.htm

Never had one of these but always wanted one.
Logged
g4jqt
Member

Offline Offline

Posts: 4


« Reply #2 on: March 06, 2023, 12:19:51 PM »

Thanks for the link. One I missed.
Logged
Tom WA3KLR
Contributing
Member
*
Offline Offline

Posts: 2100



« Reply #3 on: March 06, 2023, 06:28:06 PM »

A ham friend of mine had one as a kid, re-acquired one, restored it, I'm not sure if he ever posted the story here before.

Here is his webpage on the Broadcaster, includes links to other Broadcaster sites with information:

https://wa3dsp.org/KnightBroadcaster/
Logged

73 de Tom WA3KLR  AMI # 77   Amplitude Modulation - a force Now and for the Future!
DMOD
AC0OB - A Place where Thermionic Emitters Rule!
Contributing
Member
*
Offline Offline

Posts: 1702


« Reply #4 on: March 15, 2023, 12:19:25 AM »

Does anyone have the details of the impedance matching for T1 and the turns ratio/inductances of L1 in the Knights Radio Broadcaster? There seem to be various versions of this design produced by Knights (all appear to be potential death traps!) and I wonder if anyone has the specifications of these components.

I'd like to think that the design gave excellent results and was based designed by the best in the business, despite the obvious cost restrictions, and I would like to make a copy, although a mains isolating transformer for our 240VAC would be necessary.

I did have a search in the forum but didn't find any reference to it.

Thanks.

In the Transmitter section

http://amfone.net/Amforum/index.php?topic=42107.0

There is a set of schematics and explanation on homebrewing your own HIFI broadcast transmitter with references to the Knight and another transmitter.

Phil - AC0OB
Logged

Charlie Eppes: Dad would be so happy if we married a doctor.
Don Eppes: Yeah, well, Dad would be happy if I married someone with a pulse.NUMB3RS   Smiley
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 0.051 seconds with 19 queries.