Re: [AMRadio] Good Hams
W5OMR/Geoff wrote: See ya on (if I recall) 3.980, late at night. durn lysdexia... 3.890 -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Good Hams
Brian Sherrod wrote: That's probably what I'm going to do. I've got enough 450t's to do the job, and I might even just run one in the final, as it's plenty enough. One in the final, and a pair in the modulator, is the equivalent of running a single 833A in the final, modulated by a pair (ala K5SWK) I still have the big 849 triodes which I plan to use for the modulators as did the Bartlesville TX. I used this exact configuration in a lash up for some time, mainly to make sure the old 849's were still good. They are both 69 years old ;) Amazing how far a little TLC goes, on these ol' big jugs. Seems a few of us have taken about a 5 year break from the radios, and ready to jump back in now. Until I get the big tx moved into my shack and wired up, I will be using my new Flex Radio with a Henry 3K Classic X on AM. Look for me in about a week late night or early morning. Work calls (again) and I'll be out of town till around the 4th of July, but plan on doing some late-night radio (midnight CST and later) during the slower summer months, and then hang out under the AC in the day-time. Temps in South Texas are already near the century mark, and Summer isn't 'officially' here, for another week. ~sigh~ Gonna be a hot one. See ya on (if I recall) 3.980, late at night. -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Good Hams
I've got a 450TL and a line on a pair of TH's, but I don't think the 750T and the 450T have the same base, but I might be mistaken. At 450W of plate dissapation each, the 450's (if the base is the same) would work in the Bartlesville Transmitter (if I'm remembering correctly). That's probably what I'm going to do. I've got enough 450t's to do the job, and I might even just run one in the final, as it's plenty enough. I still have the big 849 triodes which I plan to use for the modulators as did the Bartlesville TX. I used this exact configuration in a lash up for some time, mainly to make sure the old 849's were still good. They are both 69 years old ;) Hey, up in your neighborhood (almost) in Shreveport, ol' Ronnie/W5SUM (ex WB5AWA) got hisself an RF deck to house a couple of 450T's. Check with Ronnie. Last I knew, he was gathering parts for a home-brewed single 450T final, modulated by a pair of 450's. Since he now has that deck, perhaps y'all could work something on homebrewing you up a rig to get back on the air with. Yeah, I've emailed Ronnie a few times about his soon to be transmitter. Speaking of which, have you (or anyone) talked to W5NBC lately? Last I heard from him, Jim was in Sour Lake, TX, just west of Beaumont, on Highway 105. I talked with Jim on 3893 two or three times in the last month and he is doing very well. Still lives in Sour Lake. He has been traveling a lot lately. Also Kent, KA5MIR is getting things ready to get back on the air too. Seems a few of us have taken about a 5 year break from the radios, and ready to jump back in now. Until I get the big tx moved into my shack and wired up, I will be using my new Flex Radio with a Henry 3K Classic X on AM. Look for me in about a week late night or early morning. 73, Brian -- "There is nothing more uncommon than common sense." -- Frank Lloyd Wright
RE: [AMRadio] Good Hams
Mark, You might broaden your search to include the VT-25, VT-62 (801), the 10, and 10Y. The 10 family tubes [10, 10Y, and 801] are old triodes, designed in the 20's, and built through the 40's. They feature thoriated tungsten filaments. All these share the same base, and have 7.5 volt @ 1.25 amp filaments. http://www.mif.pg.gda.pl/homepages/frank/sheets/049/8/801A.pdf http://www.mif.pg.gda.pl/homepages/frank/short/064/1/10.gif http://www.nj7p.org/Tube4.php?tube=vt-25 http://www.nj7p.org/Tube4.php?tube=vt-62 http://www.nj7p.org/Tube4.php?tube=801 Do you have the type 46 tetrodes (3) as well for the audio section of the BC-223? This data sheet has the BC-223 modulator in the application section: http://www.mif.pg.gda.pl/homepages/frank/sheets/021/4/46.pdf Jim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of W1EOF Sent: Tuesday, June 06, 2006 10:23 PM To: Discussion of AM Radio Subject: RE: [AMRadio] Good Hams With all this talk of tubes and good will toward men... If anyone has a pair of 801As they want to sell or trade, I need a pair to get my BC-223 on the air. It's cleaning up nicely and very soon the 801s will be the only thing holding me up. Thanks! 73, Mark W1EOF __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net AMfone Website: http://www.amfone.net AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.2/357 - Release Date: 6/6/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.2/357 - Release Date: 6/6/2006
RE: [AMRadio] Good Hams
With all this talk of tubes and good will toward men... If anyone has a pair of 801As they want to sell or trade, I need a pair to get my BC-223 on the air. It's cleaning up nicely and very soon the 801s will be the only thing holding me up. Thanks! 73, Mark W1EOF
Re: [AMRadio] Good Hams
Brian Sherrod wrote: In the meantime, if you come across a 750TH or TL, I could use a good one here. doing some quick internet searching for a 750TH/TL... You sure I can't work on gaining peace in Israel for you, instead? Might be an easier task... ;-) -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Good Hams
You're a good man and good sport Geoff... I might have some 250th's around here, but they are boxed up if I do, so will take me a month or so ;) to find them. If I find one (or two) with good filaments, I'll send 'em your way. and you call 'me' a good man. YOU da Man, Brian! thanks for the thought. They'd certainly be appreciated. In the meantime, if you come across a 750TH or TL, I could use a good one here. I've only -seen- one, once, and John/W5MEU had it. I -think- Bill/K5LLK (later WR5DX) got it, but he, too, has SK'ed on us. I've got a 450TL and a line on a pair of TH's, but I don't think the 750T and the 450T have the same base, but I might be mistaken. At 450W of plate dissapation each, the 450's (if the base is the same) would work in the Bartlesville Transmitter (if I'm remembering correctly). Hey, up in your neighborhood (almost) in Shreveport, ol' Ronnie/W5SUM (ex WB5AWA) got hisself an RF deck to house a couple of 450T's. Check with Ronnie. Last I knew, he was gathering parts for a home-brewed single 450T final, modulated by a pair of 450's. Since he now has that deck, perhaps y'all could work something on homebrewing you up a rig to get back on the air with. Speaking of which, have you (or anyone) talked to W5NBC lately? Last I heard from him, Jim was in Sour Lake, TX, just west of Beaumont, on Highway 105. -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Good Hams
On 6/6/06, W5OMR/Geoff <[EMAIL PROTECTED]> wrote: Earlier, I was bidding on a 250TH on the 'e' place. I've got 'some' but you can never have too many spares. ;-) Anyway, was outbid and I didn't persue it, but I did pass a warning on to the winning bidder about letting the filament voltage warm the tube up, and possibly chase the possibility of gassyness away from the tube, before even a small amount of grid-drive is applied. his reply was: HI, Thanks for the advice. I've had to do the same with 6146's that have sat around awhile. I built a test rig to bias a tube and but(sic) some plate current through it for the 6146's I'll likely do the same for the 100th's and 250th headed into a BC-610E under restoration here. Thanks again for passing on the warning. Ham radio is really full of great people. 73, Pete Hamersma, WB2JWU --- You're a good man and good sport Geoff... I might have some 250th's around here, but they are boxed up if I do, so will take me a month or so ;) to find them. If I find one (or two) with good filaments, I'll send 'em your way. In the meantime, if you come across a 750TH or TL, I could use a good one here. 73, Brian / w5ami
[AMRadio] Good Hams
Earlier, I was bidding on a 250TH on the 'e' place. I've got 'some' but you can never have too many spares. ;-) Anyway, was outbid and I didn't persue it, but I did pass a warning on to the winning bidder about letting the filament voltage warm the tube up, and possibly chase the possibility of gassyness away from the tube, before even a small amount of grid-drive is applied. his reply was: HI, Thanks for the advice. I've had to do the same with 6146's that have sat around awhile. I built a test rig to bias a tube and but(sic) some plate current through it for the 6146's I'll likely do the same for the 100th's and 250th headed into a BC-610E under restoration here. Thanks again for passing on the warning. Ham radio is really full of great people. 73, Pete Hamersma, WB2JWU --- Pete is up in the New Hampshire area. Keep an ear out for what sounds like will be another fine addition (if he's not already) to our AM Ranks. -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR
