Re: [AMRadio] CORRECTION - Microphone recomendation
Jerry, There are two good Hi-Z mics that come to mind. Both are, (were), mfg by Shure. The 55S and the 737A. Both have a response from about 100cps to 10Kc. I know that most folks seem to no longer consider them, BUT, Mike M., *WN3B* (not W3NB), has won the Heavy Metal Rally several times with his Gates TX and his 55S. Mike also has the lows. I do to, but to a lesser extent, and use a 737A. YMMV! Bob - N0DGN Gerald Stockinger wrote: Good morning to all. Since I will soon be new to AM having been on SSB since 1957 I need the benefit of others experience. Last week a good amount of time was spent on audio quality so I thought I would ask here. The rig is a Collins KW-1. I need a good quality (broadcast if you will) microphone to use with it, I have a deep voice and I sound terrible on a 300 to 3000 mic. I need more lows than that. I welcome any suggestions on what microphone might fill my needs. 73 Jerry K9GOZ -- +--+ | AM Amateur Radio OperatorNØDGN | +--+ | http://home.comcast.net/~rbethman/ | +--+ | Bob Bethman\\\|/// The absence of a danger | | \\ ~ ~ // signal does *NOT* mean | | rbeth...@comcast.net (/ @ @ /) that everything is OK | +--o00o---°(_)°---o00o-+ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] CORRECTION - Average OP Age was BA Tr FS
Group, Heathkit used to make and sell a *40KVDC HV probe*. Heath Model IM-5210. This *NEW* ham is going to figure how to make it read 4KV full scale? *NOT* lately! Has anyone priced a new one lately? Go ahead - take your 1KV VTVM and poke around a 3KV or 4KV power supply - heck, even 2KV?!?!?! Somebody is *going* to get seriously hurt! Run a pair of 813s @ 2KV. Okay, whom is going to do what measurements? THIS IS what *WE* are losing with *US* getting older! I'm a young pup at 57! Bob - N0DGN Geoff/W5OMR wrote: Depends on the meter movement. A FS=1mA meter movement is 1000 ohms per volt. So, in order to measure kV, the series shunt is 1Megohm per 1000v. Therefore, if your DC volt meter reads 0 ~ 5, then 5Megohms would measure 5,000VDC at full scale. I think, though, you're asking more along the lines of who, of the 'todays ham' crowd even posses the knowledge of how to build a meter shunt and I've got to agree. Have you -seen- a test, recently? I got licensed in Feb of 1984, by two general class license holders. That was before the VE program. In September of that following year, was the last time the FCC came to San Antonio to administer tests. The VE program was -very- close behind (3 months or so, as I recall). 10 years after that, I helped out in the VE program, and Oh My Goodness!! The CW test is 'MULTIPLE GUESS'? (back when they -had- CW testing ~sigh~) The theory questions weren't much better... What is the current through a 1k ohm resister if 1v is applied across it? A) 250 Amps B) 117VAC C) 47 ohms D) 100mA No, seriously.. it was -that- bad! And that was 13 years ago. Can you imagine how much further down the bar has been 'lowered' by the lobbyist/employers of the Yae-com-wood manufacturers of today? Wait... you (collectively) looked surprised Oh, c'mon... you don't -really- think the ARRL lowered the standards of entry level Ham Radio licensing out of the goodness of their hearts, do you? Money Talks (you know the rest) -- 73 = Best Regards, -Geoff/W5OMR __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] CORRECTION - Average OP Age was BA Tr FS
You don't need a HV probe if you build a Class E AM transmitter. Pete, wa2cwa On Mon, 23 Jul 2007 12:36:19 -0400 rbethman [EMAIL PROTECTED] writes: Group, Heathkit used to make and sell a *40KVDC HV probe*. Heath Model IM-5210. This *NEW* ham is going to figure how to make it read 4KV full scale? *NOT* lately! Has anyone priced a new one lately? Go ahead - take your 1KV VTVM and poke around a 3KV or 4KV power supply - heck, even 2KV?!?!?! Somebody is *going* to get seriously hurt! Run a pair of 813s @ 2KV. Okay, whom is going to do what measurements? THIS IS what *WE* are losing with *US* getting older! I'm a young pup at 57! Bob - N0DGN __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] CORRECTION
From: John E. Coleman (ARS WA5BXO) [EMAIL PROTECTED] You are correct of course, about the non specific 807 to 833 relationship but this would be true also if in push pull transformer or link coupled driver, AF or RF. . . However, it is different in the modulator of some BC equipment where an 807 is a direct cathode follower to drive a specific 833, and there is no driver XFMR. And then there is that Gates model that uses a separate pushpull 6L6 amplifier feeding the grid of each 833A, each through its own output transformer.
RE: [AMRadio] CORRECTION
Don You are correct of course, about the non specific 807 to 833 relationship but this would be true also if in push pull transformer or link coupled driver, AF or RF. Either one of the 833s will see the energy arriving from the secondary of the XFMR coupling and does not care which driver tube developed that energy as they are added in the XFMR. However, it is different in the modulator of some BC equipment where an 807 is a direct cathode follower to drive a specific 833, and there is no driver XFMR. John, WA5BXO
Re: [AMRadio] CORRECTION
- Original Message - From: Donald Chester In the Gates BC1-T, there are two 833A's, driven by two 807's. So I suppose you could say that each 833A is driven by an 807. That's true for the modulator section. In the PA, the 807s are in parallel, as are the 833A tubes. The PA is single-ended. But still, if two 833A's an parallel are driven by two 807's in parallel, you could say that each 833A is drivien by an 807. There are simply two 807-833A amplifier sections in parallel. This is not to say that a specific one of the 807's drives a specific one of the 833A's. Don
Re: [AMRadio] CORRECTION
- Original Message - From: Donald Chester In the Gates BC1-T, there are two 833A's, driven by two 807's. So I suppose you could say that each 833A is driven by an 807. That's true for the modulator section. In the PA, the 807s are in parallel, as are the 833A tubes. The PA is single-ended. Phil K2PG
Re: [AMRadio] CORRECTION
In the Gates BC1-T, there are two 833A's, driven by two 807's. So I suppose you could say that each 833A is driven by an 807. Don k4kyv
Re: [AMRadio] CORRECTION
ROBERT RICKARDS wrote: DON'T KNOW WHY I SAID THE 833'S WERE DRIVEN BY AN 807. IS IN FACT AN 813. OOPS (before someone else says it, typing in ALL CAPS is considered 'SHOUTING') 73 = Best Regards, -Geoff/W5OMR Gee Geoff, I didn't know that. In the news media, all caps and double spacing is correct. Double spacing of all caps makes it easier for us old people to read. 73 Jim W5JO
RE: [AMRadio] Correction to Case # - Send your Comment to the FCC about BPL
Sent mine in this morning. Don K2FY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Mark Foltarz Sent: Wednesday, June 16, 2004 2:34 PM To: t 368; amradio@mailman.qth.net; [EMAIL PROTECTED] Subject: [AMRadio] Correction to Case # - Send your Comment to the FCC about BPL The case is 04-37 Here we go... 1 . goto http://gullfoss2.fcc.gov/prod/ecfs/upload_v2.cgi 2. In box 1 enter 04-37 3. Fill in your name address etc. 4. Enter you thoughts on BPL in the comments section (Send a Brief Comment to FCC (typed-in) ) perhaps something like : In Writing, I wish to persuade the FCC from allowing BPL to be implemented. The destruction or at the least, deterioration of the shortwave bands is not only a violation of ITU laws that protect international broadcasters from interference and jamming, it will be destroying many people's life hobby. Amateur radio will be reduced to users with high-power amplifiers and large antennas. Emergency communications will be hindered to levels directly responsible for the loss of life. Also, this will hinder military HF comms reducing national security There are many technologies that make BPL unnecessary. BPL will never be able to carry the high bandwidth demands for mass distribution of video much less the up-and-coming HDTV. Thank You! __ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail ___ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio
