SB-220 6 Meter Output

Author Post

Keith, N4ZQ

Mon Apr 18 2011, 05:41PM
Has anyone done the 6 meter conversion that appeared in a QST Hints and Kinks many many years ago. The one where you take a few turns off the 10 meter input coil and change the caps. Also you had to re tap the the Output Tank Coil. I was wondering what kind of output power on 6 I could expect to see after this simple mod.

Keith
Back to top
Trev, EA5ISZ
Tue Apr 19 2011, 08:17AM
Trev, EA5ISZ

Registered Member #13
Joined: Tue Mar 18 2008, 01:43PM

Posts: 143
Hi Keith, I believe our resident expert on this conversion is Ian G5WQ. If he doesn't pick up this thread you might drop him a Private Message via the site; he has a lot of experience with this type of conversion.
Back to top
Mark, CT1FJC
Wed Apr 20 2011, 07:58PM
Mark, CT1FJC
Registered Member #287
Joined: Sat Apr 19 2008, 12:14PM

Posts: 15
Hello Keith
See my mod photo's, Yahoo SB-220 group.
Take note of tank circuit tap point.
Good luck, 73 Mark CT1FJC
Back to top
Per, LA7DFA
Thu Apr 21 2011, 01:27PM
Per, LA7DFA
Registered Member #189
Joined: Sun Apr 06 2008, 04:05PM

Posts: 44
I modified a SB220 10 years ago. I made mine a monobander. To reduce the minimum tuning capacitance, I removed every second plate on the two variable capacitors.
The output was 1kW with some old tubes. ^¨^
Back to top