Warning: Creating default object from empty value in /homepages/11/d132647312/htdocs/Amfone/mkportal/include/SMF/smf_out.php on line 47
Another Gates BC1T on 75M




 
The AM Forum
September 30, 2023, 09:58:57 PM *
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: Another Gates BC1T on 75M  (Read 476 times)
0 Members and 1 Guest are viewing this topic.
w4ax
Member

Offline Offline

Posts: 10


WWW
« on: September 05, 2023, 07:33:48 PM »

Several weeks ago I asked for some information on conversion of the Gates BC1T to 75M. I didn't receive much information so I documented with pictures and text the conversion process that I used.

I'll be pleased to try and answer any questions. https://w4ami.org/macks-restoration-bc-1t

73,

Mack
W4AX


* Gates.jpg (553.77 KB, 1740x3762 - viewed 65 times.)
Logged

73,

Mack
W4AX
KL7OF
Member

Offline Offline

Posts: 2286



« Reply #1 on: September 05, 2023, 07:56:08 PM »

Wow Mack....I'm impressed...Nice Job.  Thanks for the detailed information with great pictures...Good Luck.  Steve
Logged
W7TFO
WTF-OVER in 7 land Dennis
Contributing
Member
*
Offline Offline

Posts: 2499


IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


WWW
« Reply #2 on: September 06, 2023, 08:23:11 AM »

Thanks so much for saving another Gates from the scrap yard!

Nice take on doing it, too.

73DG Wink
Logged

Just pacing the Farady cage...
KA3EKH
Member

Offline Offline

Posts: 707



WWW
« Reply #3 on: September 06, 2023, 09:34:23 AM »

Great job, like that you used a auto transformer for the HV control . I did that with RCA that I built up for 160. Noticed you used a huge  (0.01) plate blocking capacitor in the PA, any reason? also you may want to look at second harmonic if you are still hitting the 833 hard. They wont require as much drive at 375 watts as it would at 1 kW.
Now if we can get someone who will do a dual 833 at forty.
Logged
w4ax
Member

Offline Offline

Posts: 10


WWW
« Reply #4 on: September 06, 2023, 09:43:03 AM »

This plate blocking cap was standard in my Gates. I would think it would be easy enough to move this rig to 40m with a bit more work on the neutralization circuit. Let me take a break for a bit and I may think about doing that.

Vy73,

Mack
W4AX
Logged

73,

Mack
W4AX
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 18 queries.