Re: [AMRadio] Introduction
Quick! Someone sell him a real multi-band communications receiver!!! :-) Ed, VA3ES From: "Conor Farrell" <[EMAIL PROTECTED]> To: kenw2dtc <[EMAIL PROTECTED]> CC: AMRadio@mailman.qth.net Subject: Re: [AMRadio] Introduction Date: Mon, 12 Jun 2006 17:57:48 +0100 Hey all thanks for the greetings. Ken, I'm just using a home stereo system (CD player, tape deck, etc) On 6/12/06, kenw2dtc <[EMAIL PROTECTED]> wrote: Conor, What kind of receiver are you using for your DX'ing? 73, Ken W2DTC I'm Conor..from Ireland..interested in DXing... -- -- Conor www.TechPhreek.com __ 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
RE: [AMRadio] RCA BTA-1R1
What were the major problems/issues that you delt with in getting the rig on 160? I have one of those (actually a BTA1R3) and it's "son" a BTA1S. The BTA1S is a bit smaller, and resides in an actual 6' 7" rack; exact same rig, though. Ed, VA3ES K0BS wrote: Just put a RCA BTA-1R1 on 160 with the technical help of W4AEE, N4VMY and ER. Very straight forward and a fun project.
RE: [AMRadio] D104 mic element testing
It's a piezo element, so don't put any voltage on it, i.e. from a VOM. Best tested with a scope or amplifier. I personally use a Rad Shack self-contained battery run amp to test audio devices. Ed, VA3ES OK, how do you test a D104 mic element to see if is bad? Alan
Re: [AMRadio] Are Canadians smarter than United States-ese?
K4KYV Wrote: Unfortunately (or apparently so) the prescribed bandwidth would be overly restrictive to AM if strictly enforced. On the lower HF bands, the only mode definition is 6 kHz maximum, with no subbands. Period. But I have never heard of a Canadian AM'er being cited for a signal of excessive bandwidth from his otherwise properly operated transmitter. And you never will, Don. Our regulators aren't too concerned about any excessively wide AM'ers; there are so few of us. A 6khz BW requires a 3 khz max response in the audio chain. Most guys up here are about 4 khz response. So long as we don't bother anyone. the IC don't care, so long as we employ proper engineering standards, and don't splatter. Personally, when required, I use a Bailey Engineering 3.5 kc brick wall filter. Ed, VA3ES
Re: [AMRadio] W3PHL
Bacon wrote: I met Fred at the NAAAM Christmas Party in 1968. He was a legend even then. Indeed! I was a mere SWL in 1966, when I heard Fred talking to Bill, W3DUQ and others (WA1EKV, today K1KW). He ran "Upside-down-tube-modulation" which was a form of tunable Doherty modulation. He ran 20KW of audio, on a 1 KW carrier! Talk about enhanced DSB! Anyway, he was loud at my QTH. I have some correspondence between him and Hoisy Hoisington, W4CJL. If I have time I may put up that correspondence on my web-space. Ed, VA3ES
Re: [AMRadio] 10 Meter AM Frequencies
Ronnie Hull wrote: y'all got to remember that when ten is open, 5 watts can work the world. About five years ago, or so, I worked a VK on 28.4 Mhz with a QRP rig running about 7W PEP, from my mobile (running a Larson NMO-34 with 60" whip). That little rig is a portable. handie-talkie-style rig, that runs AM, FM, and SSB, and nominally operates the entire 10M band.It tunes similarly to a 2510. There is a mod to put it on CB (actually 26 - 30 Mhz), but who cares about that. It cost me $149.95 (US) and was a bargain.
Re: [AMRadio] 10M AM
James M. Walker"wrote: Mark is your BTA-1M working yet, how is that going? Hah! Try putting _that_ on 10 meters!!! :-) ed, VA3ES
RE: [AMRadio] W4CJL's Taylor Super Modulation
Pls send me ur address. Cost not a problem. 73 de Ed, VA3ES From: "UVCM INC" <[EMAIL PROTECTED]> Reply-To: Discussion of AM Radio To: "Discussion of AM Radio" Subject: RE: [AMRadio] W4CJL's Taylor Super Modulation Date: Mon, 20 Feb 2006 20:12:39 -0800 Ed, I would be interested in a copy, let me know the cost Brad KB7FQR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Monday, February 20, 2006 7:23 PM To: amradio@mailman.qth.net Subject: RE: [AMRadio] W4CJL's Taylor Super Modulation I have copies of those articles which were sent to me by Hoisy himself. I can forward a copy by snail mail. Need ur address. 73 Ed, VA3ES >From: "Tom Elmore" <[EMAIL PROTECTED]> >Reply-To: Discussion of AM Radio >To: >Subject: [AMRadio] W4CJL's Taylor Super Modulation >Date: Mon, 20 Feb 2006 13:19:02 -0900 > >Does anyone know if the articles that, Don Hoisington W4CJL, wrote about >Taylor Super Modulation still exist today ? I have contacted Electric Radio >magazine about getting some back issues. I would like to get some copies of >his work if it was passed along to somebody after he passed away. > > > > >Thank You >Tom Elmore KA1NVZ >Anchorage, Alaska > >__ >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 __ 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 __ 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
RE: [AMRadio] W4CJL's Taylor Super Modulation
I have copies of those articles which were sent to me by Hoisy himself. I can forward a copy by snail mail. Need ur address. 73 Ed, VA3ES From: "Tom Elmore" <[EMAIL PROTECTED]> Reply-To: Discussion of AM Radio To: Subject: [AMRadio] W4CJL's Taylor Super Modulation Date: Mon, 20 Feb 2006 13:19:02 -0900 Does anyone know if the articles that, Don Hoisington W4CJL, wrote about Taylor Super Modulation still exist today ? I have contacted Electric Radio magazine about getting some back issues. I would like to get some copies of his work if it was passed along to somebody after he passed away. Thank You Tom Elmore KA1NVZ Anchorage, Alaska __ 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
RE: [AMRadio] need help
I'd have used an MFJ 259B to actually measure the input Z. Alternatively, you can always use a small tuner to "tune" the input. I do that anyway with my Drake L4B, (use a small MFJ mobile tuner with meter). 4-400's, eh? Nice amp! If your plate voltage is high enough, you ought to get serious power out of that baby! 73, Ed, VA3ES From: Edward B Richards <[EMAIL PROTECTED]>: I want to drive a linear amplifier with a rice box that requires a 50 ohm load. The linear amp uses an input to a 170 ohm, 80 watt swamping resistor to ground, then through a .001 mfd capacitor, then through a VHF parasitic suppressor consisting of 4 turns of wire around a 47 ohm resistor, to the grids of a pair of parallel connected 4-400A tubes. What I need to know is the impedance of the input. Is it close to 50 ohms or do I need to use a matching network between the rice box and the linear amplifier.
