Should you use an 813 or four 807's for a 100 watt transmitter.
Пікірлер: 32
@jeromewhelan6723 Жыл бұрын
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.
@EvLoutonian2 жыл бұрын
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!
@SpinStar19567 ай бұрын
Appreciate all your hard work. 73… 😊
@Radio4782 ай бұрын
Great thanks 👍 from England
@m0dad2 жыл бұрын
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.
@donwright34275 ай бұрын
807s are very nice for guitar amplifiers. They have a good tone and even harmonics
@chris_vk3cae2 жыл бұрын
Another excellent production 👍
@luckydubeinrc51652 жыл бұрын
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.
@Vortex5Australia2 жыл бұрын
amazing, bloody amazing... Let's hope you hit those tropic bands soon...
@kristhompson8112 Жыл бұрын
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
@Albert-zl3zd2 жыл бұрын
Nice old stuf. Albert the netherlands Also Nice weather There 📻🇳🇱
@sciencefollower Жыл бұрын
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.
@msf60khz Жыл бұрын
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
@gordonwelcher9598 Жыл бұрын
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.
@whatillo Жыл бұрын
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
@eddyaudio2 жыл бұрын
A Wonderful Transmitter Dave
@eddyaudio2 жыл бұрын
And you are wonderful at Recycling as they Junk keep this excellent effort Dave Ian Vk2IJ.
@dhisnadhamayanthi11358 ай бұрын
I have seen grampian audio amplifier s with 807 out put tubes
@lc79tourer262 жыл бұрын
Good work Dave inspiring stuff and I'm still missing your missions if the counts for anything?
@vk3ase2 жыл бұрын
Never new any one listened.
@assumedspider84197 күн бұрын
watched this a few times do you have any schematics? cheers!
@kennethmcclure297 ай бұрын
Thank you very much. Reminds me of years past when everyone built their own equipment. Ken from gpt ms
@Paul_VK3HN2 жыл бұрын
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.
@user-bo8eq7ki5w Жыл бұрын
В СССР выпускался с строковых годов "клон" 813 -й лампы под названием ГУ-13 ( как и (г-807- 807)
@towerman756 ай бұрын
I'm sure you are a good technician, but your construction practices would make one have nightmares.
@erwe10546 ай бұрын
Radio pirate ? AM mod good!!!
@mohinderkaur667111 ай бұрын
807 x 4 is much lower impedance and low voltage design
@vk3ase11 ай бұрын
Yes one of the big advantages, but can take off at vhf and mess things up if you are not careful.
@user-ht9ks7hn5s Жыл бұрын
И все таки когда нибудь инопланетяне вам ответят
@user-oj1zq5do5y Жыл бұрын
Это ты о чем?
@MrTalaue Жыл бұрын
Nice pile of scrap
@user-oj1zq5do5y Жыл бұрын
Советские генераторные радиолампы Г-807 и 813 были сворованы у американской фирмы RCA?