Re: [AMRadio] DAYTON FLEA MARKET
But if you've got good junk to sell, it's not a bad deal. And it's still a great place to meet friends - its too bad things are so screwed up this year. There's nothing like it in the US, and the guys that are trying to do it deserve a little support in pulling it off, even if they're learning on the job. I admit I bring home less, but it still brings out all sorts of old stuff. I dragged home an ugly 30$ SX-96 last year that was mostly working and have had a ball recapping and fiddling with it this winter. And found a 5$ audio transformer new in the box for my SW-3 - what are the odds of that? But I remain convinced anything cheap and good is gone 10 minutes after the tailgates open, usually on Friday morning. 73, and see you there, I hope. Scott
[AMRadio] A Texas Hamfest
The Belton Hamfest is typically a 2-day event, with lots of friendship and commraderie, not to mention BBQ on Friday and some early tailgating, followed by the hamfest early saturday morning. Belton, TX is just south of Waco, in the vicinity of Temple, TX - south of Dallas, north of Austin. Lots of people show up there, from New Mexico to Oklahoma, Arkansas, Louisiana, to Mississippi. There's been ham plates spotted from as far away as California and Colorado. Everyone seems to have a good time. The event is held bi-annually, typically in April (this year the swapfest date is 22 April) and again in October. I wont be there, ths year. Mike's rosary is Friday evening, and the funeral/burial is Saturday. Ham radio can take a back seat to honor my friend. More information on the hamfest can be found at http://www.tarc.org/hamexpo/ BTW, I just noticed this, after verifying the address was correct, they've gone up 100% on the cost of admission. It's now $2.oo whole dollars! (smirk) The New Old Stock (NOS) group (QCWA Chapter 207) is always well represented at Belton, and boat anchors and parts are always prevalent in that vicinity. Just FYI -- 73 = Best Regards, -Geoff/W5OMR
[AMRadio] Rochester Hamfest
The Rochester Hamfest is coming up soon, June 2-3-4 at the Monroe County Fairgrounds, RT 15A, Rochester, NY. There is always a huge display of products and an expansive outdoor flea market. It's the largest hamfest I know of in the Western New York area. Hope to see some of you there. 73, Don W2DAS
[AMRadio] zepp antennas
To the group, Thanks for all the support in helping me with my Double extended Zepp, Now I am on the road to and recovery I would like to ask for more input, there is not a lot of info in print in the ARRL books about zepps. Is there an authority in zepp building? Is .64 the magic number for cutting a DEZ? I am using appx 125 to 150 feet of 450 ohm ladder line, flying at a 45 degree angle from the tower to the shack, Is there a magic number to cut the feed line for 75 meters, I will also use it on 40, and maybe 160? (Want to avoid as much as possible matching devices) Are there any tricks how to terminate the feed line at the zepp? My tower is 60 feet and the poles are 30 feet high at each end BUT THEY ARE 300 FEET AWAY FROM THE TOWER ON EACH SIDE, the end of the zepp will be appx 40 feet high, Our soil is sand and clay, fairly poor ground, but we are 5000 feet high I have a Johnson kW match box, and that may be part of the problem, I need to build a better box, using vacuum caps, need a source for used variable vacuum caps, and a top notch design, any ideas? Thanks to all Brad KB7FQR
[AMRadio] BAMA
Bama is requiring me to use a user name and password. When did this change? 73 Alan
Re: [AMRadio] BAMA
Alan, I just went there and downloaded a schematic. No log in, and no password required. FWIW, I use Mozilla Firefox as my browser, and never needed to play games with FTP interfaces as it's all built into Firefox. Regards, Jim WD5JKO --- Alan Beck [EMAIL PROTECTED] wrote: Bama is requiring me to use a user name and password. When did this change? 73 Alan __ 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] Baluns for Zepp Antenna
From: [EMAIL PROTECTED] Simple Coax Balun www.southgatearc.org/techtips/coax_balun.htm Toroid Balun www.rason.org/Projects/balun/balun.htm Romex and PVC under $3.00 Balun www.bloomington.in.us/~wh2t/balun.html All those baluns operate on the assumption that the balanced load is primarily resistive. If the load is highly reactive, as is often the case with open wire resonant feeders, the balun may not function properly, especially the toroidal types at high power. I still prefer an honest-to-god balanced tuner, with split stator capacitor and symmetrical balanced coil. Don k4kyv
Re: RE: [AMRadio] Baluns for Zepp Antenna
Thanks Don You make a good point everyone should consider. I have noticed a teeker-totter effect with Toroids and un blanaced reactive feeders like 450 ohm ladder line. Get the SWR nulled out and in one minute it starts to climb again as a toroid saturates, null it out again and it happens again. Your tuner suggestion is obviously the best but a few of us like to see if we can noodle it out with home brew stuff. Thanks again for your comments Ron From: Donald Chester [EMAIL PROTECTED] Date: 2006/04/19 Wed PM 12:43:25 EDT To: amradio@mailman.qth.net Subject: RE: [AMRadio] Baluns for Zepp Antenna From: [EMAIL PROTECTED] Simple Coax Balun www.southgatearc.org/techtips/coax_balun.htm Toroid Balun www.rason.org/Projects/balun/balun.htm Romex and PVC under $3.00 Balun www.bloomington.in.us/~wh2t/balun.html All those baluns operate on the assumption that the balanced load is primarily resistive. If the load is highly reactive, as is often the case with open wire resonant feeders, the balun may not function properly, especially the toroidal types at high power. I still prefer an honest-to-god balanced tuner, with split stator capacitor and symmetrical balanced coil. Don k4kyv __ 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 Ron Weaver - W6OM Web Site: www.qsl.net/w6om
Re: Hosstraders NH Re: [AMRadio] DAYTON FLEA MARKET
On 4/19/06, RJ Mattson [EMAIL PROTECTED] wrote: I haven't been to the Hosstraders NH flea market in over 10 years. Is it still as good as I remember? Thinking of making the trip this year. bob...w2ami Bob - YES! I think so, at least. Last year was the best year I think I've had as far as enjoyment. The fall version ended up getting rained out starting Friday night, but Friday was still a good time. For the spring dates, wx was fine and so was the socializing and gear. Went into Concord for dinner at Cheers with a bunch of the AMers, lead by Larry NE1S in his early 60s Ford Falcon, complete with Elmac under the dash. Brought 4 pieces of gear with me, got rid of them all but brought 4 different ones back home (at least they were smaller). Looking forward very much to the 'fester in 3 weekends. It's always great to see the gang, soak up some suds, and hunt around the grounds for goodies. Fortunately, I'm looking more for pieces-parts and less for gear these days. BTW, the 'fest is now held in Hopkinton, just west of Concord, and at a fairground very much like the old Deerfield site. Be there or B² ! de Todd/'Boomer' KA1KAQ
RE: [AMRadio] DX-60 mode switch
I THOUGT IT WAS IN ER MAG. NOT SURE I WILL LOOK. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alan Beck Sent: Wednesday, April 19, 2006 10:34 AM To: Discussion of AM Radio Subject: Re: [AMRadio] DX-60 mode switch Thanks you David, where may I find the relay mod? Best 73 Alan DAVID O'NEILL wrote: YOU CAN DO THE RELAY MOD.USE THE SWITH TO TURN ON A RELAY FOR AM OR CW. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 18, 2006 6:45 PM To: Discussion of AM Radio Subject: [AMRadio] DX-60 mode switch Does anyone have a replacement mode switch for a DX-60. I am beginning to worry about mine. 73 Alan VY2WU __ 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] BAMA
I have had BAMA ask me for a username and password (with Internet Explorer), then a couple hours later it didn't require it. Seems to be an intermittent thing. Give it another try. 73, Don W2DAS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Alan Beck Sent: Wednesday, April 19, 2006 11:56 AM To: Discussion of AM Radio Subject: [AMRadio] BAMA Bama is requiring me to use a user name and password. When did this change? 73 Alan
Re: [AMRadio] BAMA
On BAMA I don't suggest IE. Use an FTP program and check anonymous. There is an alternate site that you can use IE. http://bama.edebris.com/manuals/ It has never asked for a user name and password. 73 Jim W5JO I have had BAMA ask me for a username and password (with Internet Explorer), then a couple hours later it didn't require it. Seems to be an intermittent thing. Give it another try. 73, Don W2DAS Bama is requiring me to use a user name and password. When did this change? 73 Alan
[AMRadio] Fw: Johnson Viking Ranger 1 PTT
- Original Message - From: w2dgb [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, April 19, 2006 8:34 AM Subject: Johnson Viking Ranger 1 PTT Hello to the list, My first posting to this list, which I have been following with much interest. My Viking 1 blew a fuse, and it is now on the bench. Replacing some caps...the usual stuff. While it is laying there, out of the cabinet, I decided that now would be a good time to add PTT to the beastie. Simple...right? Wrong. Not so easy. So far I have the Johnson mod, and the one in ER 46. Both have problems, although the ER ref is pretty good. But what other options are available? Can anyone point me to other references? Many thanks for listening, and for whatever info you can send along, Fill Fizette w2dgb AWA ARRL
Re: [AMRadio] Fw: Johnson Viking Ranger 1 PTT
Try the amfone.net website... thereis stuff and links 4 what u need... - Original Message - From: w2dgb [EMAIL PROTECTED] Date: Wednesday, April 19, 2006 3:12 pm Subject: [AMRadio] Fw: Johnson Viking Ranger 1 PTT To: amradio@mailman.qth.net - Original Message - From: w2dgb [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, April 19, 2006 8:34 AM Subject: Johnson Viking Ranger 1 PTT Hello to the list, My first posting to this list, which I have been following with much interest. My Viking 1 blew a fuse, and it is now on the bench. Replacing some caps...the usual stuff. While it is laying there, out of the cabinet, I decided that now would be a good time to add PTT to the beastie. Simple...right? Wrong. Not so easy. So far I have the Johnson mod, and the one in ER 46. Both have problems, although the ER ref is pretty good. But what other options are available? Can anyone point me to other references? Many thanks for listening, and for whatever info you can send along, Fill Fizette w2dgb AWA ARRL __ 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: RE: [AMRadio] Baluns for Zepp Antenna
Don, You are of course correct about having a balanced tuner with split stator capacitor, center tapped inductor, swinging link, and series capacitor with the link, and other variations that have been around since radio's were powered by steam. You leave out one important thing though that gets picked up by those who market tuners, and that is for every dollar spent on a commercial amplifier, you need to spend half of that for a tuner suitable for the job. There are tuners out there for more than a thousand bucks that still put the balun on the load side of the tuner. This does not have to be, and one solution dreamed up by folks wanting higher profit margins, is to take a flawed design, and keep scaling it up until it works. This is kind of like building a 10KW tuner for a 1 KW job. Maybe I am exaggerating a little, but not really that much. There are tuners that put the balun on the input side of the tuner where when the conjugate match is obtained, the balun only sees a resistive load at 50 ohms. These can use a conventional universal transmatch design with the ground return floating (common to one side of balanced input, and one side of the balanced output). I made a tuner like this, and used it for years. It worked great on 160-20 meters, but the compromise design starts to show imbalance above 20 meters. I am pretty sure MFJ, and a few others do have a few tuners designed this way. It is also refreshing to see MFJ marketing a line of tuners that are somewhat similar to a Viking Matchbox. I still think that those kilo-buck + tuners with a big balun on the output are often used in ways that are not very efficient when the load is highly reactive, and these will act exactly like Ron described below. Regards, Jim Candela WD5JKO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Wednesday, April 19, 2006 11:54 AM To: Discussion of AM Radio; amradio@mailman.qth.net Subject: Re: RE: [AMRadio] Baluns for Zepp Antenna Thanks Don You make a good point everyone should consider. I have noticed a teeker-totter effect with Toroids and un blanaced reactive feeders like 450 ohm ladder line. Get the SWR nulled out and in one minute it starts to climb again as a toroid saturates, null it out again and it happens again. Your tuner suggestion is obviously the best but a few of us like to see if we can noodle it out with home brew stuff. Thanks again for your comments Ron From: Donald Chester [EMAIL PROTECTED] Date: 2006/04/19 Wed PM 12:43:25 EDT To: amradio@mailman.qth.net Subject: RE: [AMRadio] Baluns for Zepp Antenna From: [EMAIL PROTECTED] Simple Coax Balun www.southgatearc.org/techtips/coax_balun.htm Toroid Balun www.rason.org/Projects/balun/balun.htm Romex and PVC under $3.00 Balun www.bloomington.in.us/~wh2t/balun.html All those baluns operate on the assumption that the balanced load is primarily resistive. If the load is highly reactive, as is often the case with open wire resonant feeders, the balun may not function properly, especially the toroidal types at high power. I still prefer an honest-to-god balanced tuner, with split stator capacitor and symmetrical balanced coil. Don k4kyv __ 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 Ron Weaver - W6OM Web Site: www.qsl.net/w6om __ 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: 7.1.385 / Virus Database: 268.4.4/318 - Release Date: 4/18/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.4/318 - Release Date: 4/18/2006
[AMRadio] Preselector
Has anyone here had experience with an RME-23 preselector? I was storing some things in my shed and ran across one. I can't remember when or where I got it, but after installing a new power cord it seems to be functioning normal, with voltages all within tolerance. I haven't hooked it up to a receiver, but thought I would give it try later. Is it worth the trouble of pulling out a receiver and making the necessary connections? Thanks, Rick/K5IZ
Re: RE: [AMRadio] Baluns for Zepp Antenna
Balanced, swinging-link, dual-differential output tuners get rid of all the problems. Build one. I did. Go to the Cebik site. If I can do it, anyone can. 73, Barrie, W7ALW - Original Message - From: Jim candela [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Wednesday, April 19, 2006 7:33 PM Subject: RE: RE: [AMRadio] Baluns for Zepp Antenna Don, You are of course correct about having a balanced tuner with split stator capacitor, center tapped inductor, swinging link, and series capacitor with the link, and other variations that have been around since radio's were powered by steam. You leave out one important thing though that gets picked up by those who market tuners, and that is for every dollar spent on a commercial amplifier, you need to spend half of that for a tuner suitable for the job. There are tuners out there for more than a thousand bucks that still put the balun on the load side of the tuner. This does not have to be, and one solution dreamed up by folks wanting higher profit margins, is to take a flawed design, and keep scaling it up until it works. This is kind of like building a 10KW tuner for a 1 KW job. Maybe I am exaggerating a little, but not really that much. There are tuners that put the balun on the input side of the tuner where when the conjugate match is obtained, the balun only sees a resistive load at 50 ohms. These can use a conventional universal transmatch design with the ground return floating (common to one side of balanced input, and one side of the balanced output). I made a tuner like this, and used it for years. It worked great on 160-20 meters, but the compromise design starts to show imbalance above 20 meters. I am pretty sure MFJ, and a few others do have a few tuners designed this way. It is also refreshing to see MFJ marketing a line of tuners that are somewhat similar to a Viking Matchbox. I still think that those kilo-buck + tuners with a big balun on the output are often used in ways that are not very efficient when the load is highly reactive, and these will act exactly like Ron described below. Regards, Jim Candela WD5JKO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Wednesday, April 19, 2006 11:54 AM To: Discussion of AM Radio; amradio@mailman.qth.net Subject: Re: RE: [AMRadio] Baluns for Zepp Antenna Thanks Don You make a good point everyone should consider. I have noticed a teeker-totter effect with Toroids and un blanaced reactive feeders like 450 ohm ladder line. Get the SWR nulled out and in one minute it starts to climb again as a toroid saturates, null it out again and it happens again. Your tuner suggestion is obviously the best but a few of us like to see if we can noodle it out with home brew stuff. Thanks again for your comments Ron From: Donald Chester [EMAIL PROTECTED] Date: 2006/04/19 Wed PM 12:43:25 EDT To: amradio@mailman.qth.net Subject: RE: [AMRadio] Baluns for Zepp Antenna From: [EMAIL PROTECTED] Simple Coax Balun www.southgatearc.org/techtips/coax_balun.htm Toroid Balun www.rason.org/Projects/balun/balun.htm Romex and PVC under $3.00 Balun www.bloomington.in.us/~wh2t/balun.html All those baluns operate on the assumption that the balanced load is primarily resistive. If the load is highly reactive, as is often the case with open wire resonant feeders, the balun may not function properly, especially the toroidal types at high power. I still prefer an honest-to-god balanced tuner, with split stator capacitor and symmetrical balanced coil. Don k4kyv __ 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 Ron Weaver - W6OM Web Site: www.qsl.net/w6om __ 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: 7.1.385 / Virus Database: 268.4.4/318 - Release Date: 4/18/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.4/318 - Release Date: 4/18/2006 __ 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
