I so enjoyed this. Seeing the re-used chassis and panel, the chain-drilled large holes, the point-to-point wiring, and hand-wound coils brings back fond memories of my first 807-based transmitter in 1963.
Bloody fantastic - and inspiring stuff. Really enjoyed seeing the work you've done, and getting to see it all up close with the detailed explanation. Fascinating!
love guys like this...we build it, you can buy it over a counter for a few thousand, well done and good explanations, i enjoyed looking into your valve world.
Excellent stuff and very inspirational video. This is real radio. I wish my vintage junkbox components was half as extensive. I find those 2.5mh chokes very hard to come by but have a few in reserve. Will have to have a rummage soon and get building. Many thanks for sharing the video. 73 from North East England. M0DAD David.
Just dropped in on your channel , Sounding very much like a ZL accent brother if I'm not correct, If it glows in the dark the better, if it glows x4 in the dark, now your talking. Wish I knew more about this old boat anchor High voltage kit. Just love it Regards and 73's Auckland NZ
VERY MUCH APPRECIATED. I REMEMBER I USED THREE 813 IN MY HOME MADE TRANSMITTER. THE PLATES WENT RED HOT DURING SSB TRANSMISSION AND I USED TO PASS MIKE. I DID NOT ARRANGE FORCE AIR COLLINS. REGARDS, AP2KD.
The 814 is something like 1/2 of an 813. 1500 volts, 150 ma, 60 watts dissipation. Years ago I remember buying them for about $2. Not very common nowadays. They worked well if you don't mind 1500 volts.
Hey very nice...I built a linear amplifier whit two 813 in grounded grid configuration and that thing make a lot of audio big audio coming out from those bottles. 73"...W
A lifetime of building, using and thinking about valve AM transmitters let's you do this... a 200 watt tube AM Tx made out of stuff most hams would bin! Great work Dave, the global semiconductor shortage hasn't bothered you.
I so enjoyed this. Seeing the re-used chassis and panel, the chain-drilled large holes, the point-to-point wiring, and hand-wound coils brings back fond memories of my first 807-based transmitter in 1963.
Appreciate all your hard work.
73… 😊
Bloody fantastic - and inspiring stuff. Really enjoyed seeing the work you've done, and getting to see it all up close with the detailed explanation. Fascinating!
Great thanks 👍 from England
807s are very nice for guitar amplifiers. They have a good tone and even harmonics
love guys like this...we build it, you can buy it over a counter for a few thousand, well done and good explanations, i enjoyed looking into your valve world.
Excellent stuff and very inspirational video. This is real radio. I wish my vintage junkbox components was half as extensive. I find those 2.5mh chokes very hard to come by but have a few in reserve. Will have to have a rummage soon and get building. Many thanks for sharing the video. 73 from North East England. M0DAD David.
Another excellent production 👍
Just dropped in on your channel , Sounding very much like a ZL accent brother if I'm not correct, If it glows in the dark the better, if it glows x4 in the dark, now your talking. Wish I knew more about this old boat anchor High voltage kit. Just love it Regards and 73's Auckland NZ
Nice old stuf. Albert the netherlands Also Nice weather There 📻🇳🇱
amazing, bloody amazing... Let's hope you hit those tropic bands soon...
I use the miniature 807 called 5B/254M. It is electrically identical and I get 75mA cathode current at 600V and 30 W output in AB1. 73
VERY MUCH APPRECIATED. I REMEMBER I USED THREE 813 IN MY HOME MADE TRANSMITTER. THE PLATES WENT RED HOT DURING SSB TRANSMISSION AND I USED TO PASS MIKE. I DID NOT ARRANGE FORCE AIR COLLINS.
REGARDS, AP2KD.
The 814 is something like 1/2 of an 813. 1500 volts, 150 ma, 60 watts dissipation.
Years ago I remember buying them for about $2. Not very common nowadays.
They worked well if you don't mind 1500 volts.
Hey very nice...I built a linear amplifier whit two 813 in grounded grid configuration and that thing make a lot of audio big audio coming out from those bottles.
73"...W
A Wonderful Transmitter Dave
And you are wonderful at Recycling as they Junk keep this excellent effort Dave Ian Vk2IJ.
I have seen grampian audio amplifier s with 807 out put tubes
Good work Dave inspiring stuff and I'm still missing your missions if the counts for anything?
Never new any one listened.
watched this a few times do you have any schematics? cheers!
Thank you very much. Reminds me of years past when everyone built their own equipment. Ken from gpt ms
В СССР выпускался с строковых годов "клон" 813 -й лампы под названием ГУ-13 ( как и (г-807- 807)
I'm sure you are a good technician, but your construction practices would make one have nightmares.
A lifetime of building, using and thinking about valve AM transmitters let's you do this... a 200 watt tube AM Tx made out of stuff most hams would bin! Great work Dave, the global semiconductor shortage hasn't bothered you.
Radio pirate ? AM mod good!!!
807 x 4 is much lower impedance and low voltage design
Yes one of the big advantages, but can take off at vhf and mess things up if you are not careful.
И все таки когда нибудь инопланетяне вам ответят
Это ты о чем?
Nice pile of scrap
Советские генераторные радиолампы Г-807 и 813 были сворованы у американской фирмы RCA?