The New Dx Directory
Image
COMING SOON!
CBRT Visitors get first look. You may log in with your dxdirectory.com username/email and password or you can register here. Please be in mind that it is still under construction, and so some links may not work. Let me know what you think by clicking here.

sonar br21

This is the place to ask questions about linear amplifiers, or power supplies

Moderator: JR Moderator

User avatar
295 antenna
Mod Duck
Mod Duck
Posts: 618
Joined: Sunday, 23 October 2016, 21:45 PM
Radio: optima ,cobra 148ex
Antenna: patriot,brownig
Name: Charles Reney
Cell Phone: 760-672-1257

sonar br21

Post by 295 antenna » Thursday, 05 July 2018, 19:27 PM

hey I got a Sonar BR21 tube amp.I cant find much on it .i checked out cb trick and they have a manual . My question is how much power should i expect to see out of it. Im driving it with the browning so its 4 watts rms.


Keep smiling ...It makes people wonder what your up too !

American eagle member : AE1577
TWRC Member : WR2950


User avatar
MDYoungblood
Moderator
Moderator
Posts: 7514
Joined: Saturday, 12 June 2010, 19:05 PM
Radio: Uniden Washington
Antenna: Avanti Sigma II
Name: Greg
Location: Baltimore, MD
Contact:

Re: sonar br21

Post by MDYoungblood » Friday, 06 July 2018, 5:08 AM

Good question. Back in the day the amp would put out around 100w on AM (SSB a little more), figuring the tubes (6JB6)(if they weren't replaced with 6JU6's) are older, my guess would be around 70 easy. A 6JB6 tube is rated at 35 to 50w.

3's

Greg


"321, the Middle of Maryland"

23 AM "WORLD WIDE" 38 LSB

Strong Supporter of America's Original Homeland Security Act
The Second Amendment



Official Moderator - CBRT Complaint Department

User avatar
295 antenna
Mod Duck
Mod Duck
Posts: 618
Joined: Sunday, 23 October 2016, 21:45 PM
Radio: optima ,cobra 148ex
Antenna: patriot,brownig
Name: Charles Reney
Cell Phone: 760-672-1257

Re: sonar br21

Post by 295 antenna » Friday, 06 July 2018, 7:35 AM

ok well the tubes are good i tested them and they are 6JB6's. what would the issue be if i was only getting 50 watts out? i followed the tuning directions also ?


Keep smiling ...It makes people wonder what your up too !

American eagle member : AE1577
TWRC Member : WR2950

User avatar
knj6006
NEW DUCK
NEW DUCK
Posts: 1
Joined: Thursday, 19 June 2014, 17:44 PM
Name: Gary
Cell Phone: 5088136143

Re: sonar br21

Post by knj6006 » Monday, 30 July 2018, 11:14 AM

These amps were only rates at 35-40 watts dead key with 3-4 watts drive.. They ONLY have 475 volts on the plate, most sweep tube amps run 800-1000 volts..



User avatar
295 antenna
Mod Duck
Mod Duck
Posts: 618
Joined: Sunday, 23 October 2016, 21:45 PM
Radio: optima ,cobra 148ex
Antenna: patriot,brownig
Name: Charles Reney
Cell Phone: 760-672-1257

Re: sonar br21

Post by 295 antenna » Monday, 30 July 2018, 19:42 PM

Ok thank you knj6006 for the info


Keep smiling ...It makes people wonder what your up too !

American eagle member : AE1577
TWRC Member : WR2950


Post Reply Previous topicNext topic