DRAKE L4B

Drake L4B is hacked. Help me out "1N250C" ?See more

Drake L4B is hacked. Help me out '1N250C' ?

Drake L7 Linear Amplifier on the bench, keyed down on the Dummy Load.See more

Drake L7 Linear Amplifier on the bench, keyed down on the Dummy Load.

Drake L4B amplifier ES4L-4B Soft Start, Soft Key and BIAS Install Notes #1 December 22, 2023See more

Drake L4B amplifier ES4L-4B Soft Start, Soft Key and BIAS Install Notes #1 December 22, 2023

DEMO Drake L4B Linear Amplifier 1200 watts on 20m dual 3-500z's ES4L-4BSee more

DEMO Drake L4B Linear Amplifier 1200 watts on 20m dual 3-500z's ES4L-4B

Drake L-4B HF linear amplifier dual Eimac 3-500z tubes demo in operation Collins Ameritron HenrySee more

Drake L-4B HF linear amplifier dual Eimac 3-500z tubes demo in operation Collins Ameritron Henry

Drake L4B amplifier ES4L-4B Soft Start, Soft Key and BIAS Install Notes #2 December 22, 2023See more

Drake L4B amplifier ES4L-4B Soft Start, Soft Key and BIAS Install Notes #2 December 22, 2023

Drake L4b Repair And Modifications 3-500zg TubesSee more

Drake L4b Repair And Modifications 3-500zg Tubes

DEMO Drake L4B Linear Amplifier soft start demo with ES4L-4B-v1.0 board and Key up demoSee more

DEMO Drake L4B Linear Amplifier soft start demo with ES4L-4B-v1.0 board and Key up demo

Harbach PM-400 instructions Drake L4BSee more

Harbach PM-400 instructions Drake L4B

Drake L-4B 1KW Amateurfunk PA. Made in USA 1976! Wir erwecken sie zum Leben! Endstufe HAM AmplifierSee more

Drake L-4B 1KW Amateurfunk PA. Made in USA 1976! Wir erwecken sie zum Leben! Endstufe HAM Amplifier

Drake L4B linear Amplifier how to install Harbauch Soft start and soft key module and some rantingSee more

Drake L4B linear Amplifier how to install Harbauch Soft start and soft key module and some ranting

Drake L4B linear amplifier capacitors reformed been running on Vac now 3000 V B+. Oiled the fanSee more

Drake L4B linear amplifier capacitors reformed been running on Vac now 3000 V B+. Oiled the fan

Harbauch PM-400 power supply board for Drake L4B Linear Amplifier kit all soldered and assembledSee more

Harbauch PM-400 power supply board for Drake L4B Linear Amplifier kit all soldered and assembled

$130 on eBay? OK: Drake L4B buy a chimney for 3-500Z tubes. Coleman R214D046C $14 on Amazon.See more

$130 on eBay? OK: Drake L4B buy a chimney for 3-500Z tubes. Coleman R214D046C $14 on Amazon.

Coleman lantern, chimney, substitute for a Drake linear amplifier L4B chimney replacementSee more

Coleman lantern, chimney, substitute for a Drake linear amplifier L4B chimney replacement

Harbauch PM-400 install assembled board into Drake L4B linear amplifier power supplySee more

Harbauch PM-400 install assembled board into Drake L4B linear amplifier power supply

Drake L4B linear amplifier 600 watts out on one 3-500z tube on 20 metersSee more

Drake L4B linear amplifier 600 watts out on one 3-500z tube on 20 meters

Drake L4B linear amplifier only 800 watts output. Probably need new pair 3-500Z tubesSee more

Drake L4B linear amplifier only 800 watts output. Probably need new pair 3-500Z tubes

New to me, Drake, L4B linear amplifier tour of underside and upside and front and back. Enjoy.See more

New to me, Drake, L4B linear amplifier tour of underside and upside and front and back. Enjoy.

2023 11 26 DRAKE L 4B - 1 kW on 10 mSee more

2023 11 26 DRAKE L 4B - 1 kW on 10 m

Actual