[AMRadio] FS: BA Literature and Misc.
For Sale: More BA Literature and Other Stuff Vertical Antenna Classics by R. Schetgen, large format paperback, ARRL, 1995. $9 Lee, Capt. Paul N., USNR, Vertical Antenna Handbook, Cowan (CQ), 1974, small format paperback. $11 Cooke, Mathematics for Electricians and Radiomen, McGraw-Hill Hardback, 1942. Good. $9 Fribance, Industrial Instrumentation Fundamentals, McGraw-Hill, 1962, good hardback. $9 Tucker and Wills, A Simplified Technique of Control System Engineering, Honeywell, 1962, good hardback: $8 Into A Second Century With Procter and Gamble, 1944. PG company history, Good hardback. $6 Parr, The Cathode Ray Tube, 1937, good hardback: $8 Heathkit T-3 Signal Tracer with probe. Powers up and eye lights but stays closed all the time. Does not seem to do anything unless switch is in High position. So this needs some work (or maybe just switch cleaning). $19 Heathkit IT-12 Signal Tracer. Must be a later version of T-3 above. With probe but probe cables have been taped. Lots of paint missing from one cabinet side. Flocking is worn a bit thin. Gain control is very noisy. But otherwise seems to work including eye tube. $14 ARRL Hints and Kinks, Vol. VII, 1965, good condition. $6 ARRL, A Course In Radio Fundamentals, George Grammar, 3rd ed., 1948. Some spine wear. $6 CQ Magazine, 1/60, 9/60, 4/62, 5/73. Spines loose and deterorating. $1 Ham Radio Magazine, 7/68, 5/70, 1/74. Good. $2 GE Ham News, Vol 5. #2 with 15 watt emergency/portable rig. $0.50 RCA Ham Tips, Vol 16, #2, 7/8-1956, Versatile Modulator, transistorized input and PP 6146's. $0.50 Tektronix P6430 Temperature Probe original manual. $5 Heathkit GD-2007 Bug Killer original manual. $3 Heathkit V-5 VTVM original manual. $5 Heathkit MP-10 Power Inverter original manual. $3 Heathkit BE-5 Battery Eliminator original manual. $3 Heathkit IG-5240 Color Generator original manual. Free Heathkit HD-1984 Micoder II original manual. $5 Heathkit IG-42 Signal Generator foldout pictorial diagram only. Free Dumont MCA-101-B Mobile Communications Apparatus (FM 2-way) original manual. 1950s? $2 Elenco S-3000 Oscilloscope original manual. $1 RCA WV-516A VOM original manual. $1 Ramsey Tattle-Tail Telephoen Recorder original manual. Free Link FMTR-7A Frequency Modulated Mobile Equipment original manual. $1 C. M Howes HF Amateur Equipment Kits catalog . Undated. $1 Regency ACT-T-16K Preliminary Service Manual. Free. American Dynamics Model 1408 8-Position Sequenctial Video Switcher operating Manual. 1985. Free Yaesu FTV-107R Transverter for 6M, 2M and 440Mc. With modules for 6M and 2M. Supports repeater split and satillite full duplex (using an external receiver). Input and output freq is 28-30mc. 20 watts SSB, CW and FSK. 5 watts AM. Includes 6M and 2M modules but no 440 module. Good working condition. Some scratches on cabinet. Front panel is excellent (this is the ivory-colored model). With partial manual copy. $110 Thanks for looking. 73, Don Merz, N3RHT The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A)
[AMRadio] RE: GB Antenna Tuner Wonderings
Thanks for your reply. OK, Yes, I understand. Some of the rigs here are homebrew and the output network designs are all over the lot. On the antenna side, there are situations here like a vertical with a poor counterpoise that will have 25 or 30 ohms to match at some frequencies. Then there's the Windom, which isn't resonant anywhere. IMHO, resonant antennas are convenient, but certainly not necessary (thank God). 73, Don Merz, N3RHT -Original Message- From: Bob Macklin [mailto:[EMAIL PROTECTED] Sent: Monday, December 13, 2004 5:56 PM To: Merz Donald S; [EMAIL PROTECTED]; 'Amradio (E-mail) Subject: Re: GB Antenna Tuner Wonderings With BA unit wit Pi networks you don't need a TransMatch (they ARE NOT antenna tuners). Most will match anything between 50 and about 500 ohms. One exception is the Heath DX-60. It is limited to 50 to 75 ohms becase of the built in LP filter. You need a resonant antenna for each band you want to work. Some could be multi band antennas. A TransMatch does not correct antenna problems. It hides them from the transmitter. The Pi network in the BA rigs is the same thing that was in older transmatches to connect link couples transmitters to coax lines. It is the solid state riceboxes that really need a transmatch. Bob Macklin K5MYJ/7 Seattle, Wa. REAL RADIOS GLOW IN THE DARK - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: [EMAIL PROTECTED]; 'Amradio (E-mail) amradio@mailman.qth.net Sent: Monday, December 13, 2004 2:23 PM Subject: GB Antenna Tuner Wonderings As most of you know, I am a long time BA collector and inexperienced operator. I am getting there. But it's a learning process grin. I have the shack structured (in the loosest sense of the word...) into a number of stations (20-25 with about 10 in actual operation). These mostly consist of a transmitter/receiver pair with T/R relay and RX muting. The stations are in the range of 40 to 250 watts max. I run these into your choice of 5 or 6 crappy, mostly non-resonant antennas with connections being made through a home-made SO-239 patch panel. Most of my interest is in AM operation on or near the supposed AM windows on 80, 40 and 20. I have some rigs that I never change bands on. My operation is often xtal-controlled but I have VFOs on some of the rigs. Most of these old BA transmitters are pi-net outputs. So here's the deal: I can tune any of these stations into a 52 ohm dummy load and set up the rig easily enough. Now I switch to one of my crappy antennas. And of course, it is nowhere near 52 ohms at the desired operating frequency. If the mismatch isn't too bad, I can re-tune the rig's output network. If the mismatch is ugly, or if the output network is limited in range, then I can insert antenna tuner here to get a match. After a while, laziness sets in. Why should I have an antenna tuner for each rig?--especially if I never change bands on that rig? Wouldn't it make more sense to dedicate an antenna tuner to each antenna? I can use my little Palomar Tuner Tuner to match to pre-set each antenna to 52 ohms for each frequency of interest and mark each antenna tuner accordingly. Then I can simply load the rig up for 52 ohms into a dummy load, select an antenna, set the antenna tuner to my previously-marked 52 ohm point for that frequency on that antenna, patch the rig into the antenna tuner--and push-to-talk. Ok, sure, this setup put the antenna tuner over at the patch panel and not on top of the rig. Pretty inconvenient. But hey, there's 20-25 stations to deal with here. I'm supposed to have 25 antenna tuners? OTOH, I have only 3 antennas that are sloppily non-resonant enough to require a tuner at the frequencies I am interested in. So that's 25 tuners (okay, I'm exaggerating--it would probably be only 10-15 tuners because the other stations probably have adequate output networks) versus just 3. This trade-off seems worth it to me. But experience is in short supply here. So pray tell me** experienced ones, what am I missing? What is there about this idea that is bad? Any thoughts appreciated. 73, Don Merz, N3RHT ** When Winston Churchill was named First Lord of the Admiralty in 1939, he was famous for firing off memos with questions to subordinates that began Pray tell me In the Royal Navy, these soon became known, obviously, as the Lord's prayers. The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A) The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the
RE: [AMRadio] Antenna Tuner Wonderings
The antenna inventory at ARS N3RHT: Radio works 80M Windom, one end in the attic and the other end in a tree at the far corner of the property, with ends drooped down to fit the space, fed with coax Homebrew vertical dipole, about 40 feet total length, stuck upright in a big ole pine tree and held lovingly in place by the tree's branches, fed with 450 ohm ladder line to a Heathkit B-1 balun and then coax into the shack. Butternut HF-6V with the 160 meter option, on top of a 30 foot pole with a home-made counterpoise following plans published in CQ. Some of the counterpoise wires have broken. Fed with coax. Homebrew from one of the W6SAI books 10-15-20 multi-band meter dipole in the attic, center is Van Gordon 1:1 balun, tuned to resonance using MFJ 259, and fed with coax The other stuff is VHF or too junky to be worth mentioning. In a few weeks, I will put up that 1977 NOS trap dipole that I mentioned. My house is on a small, suburban lot, but that lot sits on the highest point for 20 miles in all directions. Anywaythat's what I'm working with here. All ideas appreciated. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, December 13, 2004 5:59 PM To: Merz Donald S; [EMAIL PROTECTED]; amradio@mailman.qth.net Subject: Re: [AMRadio] Antenna Tuner Wonderings Don, What kind of crappy antennas are you using, i.e., doublets fed with coax, open wire lines, etc., or end-fed wires? Or, some combination of types maybe? Rather that building up a bunch of tuners you might consider putting your efforts into erecting a set of antennas that all worked directly off a 50 or 75 ohm coax feedlines. Half-wave dipoles, one for each band, for example, or one or more of the multi-band arrangements (G5RV, fan and trap dipole, etc.). Dennis D. W7QHO Glendale, CA The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A)
Re: [AMRadio] Antenna Tuner Wonderings
Don Sounds like your on the right track with the trapped dipole. Another choice might be to use a random length wire and good ground with any of the many automatic ant. tuners designed to end feed long wires. Used one in a mobile installation with a 17 ft whip with reasonable success. Byron, W3WKR - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; amradio@mailman.qth.net Sent: Tuesday, December 14, 2004 11:39 AM Subject: RE: [AMRadio] Antenna Tuner Wonderings The antenna inventory at ARS N3RHT: Radio works 80M Windom, one end in the attic and the other end in a tree at the far corner of the property, with ends drooped down to fit the space, fed with coax Homebrew vertical dipole, about 40 feet total length, stuck upright in a big ole pine tree and held lovingly in place by the tree's branches, fed with 450 ohm ladder line to a Heathkit B-1 balun and then coax into the shack. Butternut HF-6V with the 160 meter option, on top of a 30 foot pole with a home-made counterpoise following plans published in CQ. Some of the counterpoise wires have broken. Fed with coax. Homebrew from one of the W6SAI books 10-15-20 multi-band meter dipole in the attic, center is Van Gordon 1:1 balun, tuned to resonance using MFJ 259, and fed with coax The other stuff is VHF or too junky to be worth mentioning. In a few weeks, I will put up that 1977 NOS trap dipole that I mentioned. My house is on a small, suburban lot, but that lot sits on the highest point for 20 miles in all directions. Anywaythat's what I'm working with here. All ideas appreciated. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, December 13, 2004 5:59 PM To: Merz Donald S; [EMAIL PROTECTED]; amradio@mailman.qth.net Subject: Re: [AMRadio] Antenna Tuner Wonderings Don, What kind of crappy antennas are you using, i.e., doublets fed with coax, open wire lines, etc., or end-fed wires? Or, some combination of types maybe? Rather that building up a bunch of tuners you might consider putting your efforts into erecting a set of antennas that all worked directly off a 50 or 75 ohm coax feedlines. Half-wave dipoles, one for each band, for example, or one or more of the multi-band arrangements (G5RV, fan and trap dipole, etc.). Dennis D. W7QHO Glendale, CA The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A) __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
RE: [AMRadio] Antenna Tuner Wonderings
My two cents is that no traps I have ever used held up long (days/weeks) under any sort of AM, except the butternut antenna, which does not use real traps, but some other crazy setup. All the trap dipole stuff crapped out even under DX100 power eventually, and forget about 300 watts (carrier) and up. I made a nice fire in my heathkit 2kw antenna tuner when I tried to use the balun inside it. I do dipoles cut to length, or with loading coils, no tuner now. The butternut makes a good dummy load, might work well for DX, but I don't work DX, and locally, I think the cantenna gets out better. Open wire line is great and easy/cheap to make, but getting it inside the house without a load of RF around, and into a good balanced tuner is a pain, and then you have to tune it to change bands. A sturdy resonant dipole fed with good coax is very robust and trouble free. My 80 meter dipole was up 10 years before a (small) B+W coil stock loading coil broke. When I lived with my parents, I had a radio shack 36 foot mast on their chimney, going to a tree out front, and another mast in the back yard. Storm tore the chimney off the house and bent the mast in the back yard over 90 degrees! Dad was pissed but homeowners covered it. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Byron Lichtenwalner Sent: Tuesday, December 14, 2004 11:54 AM To: Discussion of AM Radio Subject: Re: [AMRadio] Antenna Tuner Wonderings Don Sounds like your on the right track with the trapped dipole. Another choice might be to use a random length wire and good ground with any of the many automatic ant. tuners designed to end feed long wires. Used one in a mobile installation with a 17 ft whip with reasonable success. Byron, W3WKR - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; amradio@mailman.qth.net Sent: Tuesday, December 14, 2004 11:39 AM Subject: RE: [AMRadio] Antenna Tuner Wonderings The antenna inventory at ARS N3RHT: Radio works 80M Windom, one end in the attic and the other end in a tree at the far corner of the property, with ends drooped down to fit the space, fed with coax Homebrew vertical dipole, about 40 feet total length, stuck upright in a big ole pine tree and held lovingly in place by the tree's branches, fed with 450 ohm ladder line to a Heathkit B-1 balun and then coax into the shack. Butternut HF-6V with the 160 meter option, on top of a 30 foot pole with a home-made counterpoise following plans published in CQ. Some of the counterpoise wires have broken. Fed with coax. Homebrew from one of the W6SAI books 10-15-20 multi-band meter dipole in the attic, center is Van Gordon 1:1 balun, tuned to resonance using MFJ 259, and fed with coax The other stuff is VHF or too junky to be worth mentioning. In a few weeks, I will put up that 1977 NOS trap dipole that I mentioned. My house is on a small, suburban lot, but that lot sits on the highest point for 20 miles in all directions. Anywaythat's what I'm working with here. All ideas appreciated. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, December 13, 2004 5:59 PM To: Merz Donald S; [EMAIL PROTECTED]; amradio@mailman.qth.net Subject: Re: [AMRadio] Antenna Tuner Wonderings Don, What kind of crappy antennas are you using, i.e., doublets fed with coax, open wire lines, etc., or end-fed wires? Or, some combination of types maybe? Rather that building up a bunch of tuners you might consider putting your efforts into erecting a set of antennas that all worked directly off a 50 or 75 ohm coax feedlines. Half-wave dipoles, one for each band, for example, or one or more of the multi-band arrangements (G5RV, fan and trap dipole, etc.). Dennis D. W7QHO Glendale, CA The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A) __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net __ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
RE: [AMRadio] Antenna Tuner Wonderings
Good practical experience. I would have to run well into a neighbor's yard to run a plain dipole on 80 meters. I am good friends with the one neighbor who has a tall tree along the far edge of his property. I am debating asking him for access to his tree. Even then, that would put the feed point probably 100 feet away from the shack and hanging out over an alley that runs between our houses. Not a great situation. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brett gazdzinski Sent: Tuesday, December 14, 2004 12:18 PM To: 'Discussion of AM Radio' Subject: RE: [AMRadio] Antenna Tuner Wonderings My two cents is that no traps I have ever used held up long (days/weeks) under any sort of AM, except the butternut antenna, which does not use real traps, but some other crazy setup. All the trap dipole stuff crapped out even under DX100 power eventually, and forget about 300 watts (carrier) and up. I made a nice fire in my heathkit 2kw antenna tuner when I tried to use the balun inside it. I do dipoles cut to length, or with loading coils, no tuner now. The butternut makes a good dummy load, might work well for DX, but I don't work DX, and locally, I think the cantenna gets out better. Open wire line is great and easy/cheap to make, but getting it inside the house without a load of RF around, and into a good balanced tuner is a pain, and then you have to tune it to change bands. A sturdy resonant dipole fed with good coax is very robust and trouble free. My 80 meter dipole was up 10 years before a (small) B+W coil stock loading coil broke. When I lived with my parents, I had a radio shack 36 foot mast on their chimney, going to a tree out front, and another mast in the back yard. Storm tore the chimney off the house and bent the mast in the back yard over 90 degrees! Dad was pissed but homeowners covered it. Brett N2DTS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Byron Lichtenwalner Sent: Tuesday, December 14, 2004 11:54 AM To: Discussion of AM Radio Subject: Re: [AMRadio] Antenna Tuner Wonderings Don Sounds like your on the right track with the trapped dipole. Another choice might be to use a random length wire and good ground with any of the many automatic ant. tuners designed to end feed long wires. Used one in a mobile installation with a 17 ft whip with reasonable success. Byron, W3WKR - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; amradio@mailman.qth.net Sent: Tuesday, December 14, 2004 11:39 AM Subject: RE: [AMRadio] Antenna Tuner Wonderings The antenna inventory at ARS N3RHT: Radio works 80M Windom, one end in the attic and the other end in a tree at the far corner of the property, with ends drooped down to fit the space, fed with coax Homebrew vertical dipole, about 40 feet total length, stuck upright in a big ole pine tree and held lovingly in place by the tree's branches, fed with 450 ohm ladder line to a Heathkit B-1 balun and then coax into the shack. Butternut HF-6V with the 160 meter option, on top of a 30 foot pole with a home-made counterpoise following plans published in CQ. Some of the counterpoise wires have broken. Fed with coax. Homebrew from one of the W6SAI books 10-15-20 multi-band meter dipole in the attic, center is Van Gordon 1:1 balun, tuned to resonance using MFJ 259, and fed with coax The other stuff is VHF or too junky to be worth mentioning. In a few weeks, I will put up that 1977 NOS trap dipole that I mentioned. My house is on a small, suburban lot, but that lot sits on the highest point for 20 miles in all directions. Anywaythat's what I'm working with here. All ideas appreciated. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, December 13, 2004 5:59 PM To: Merz Donald S; [EMAIL PROTECTED]; amradio@mailman.qth.net Subject: Re: [AMRadio] Antenna Tuner Wonderings Don, What kind of crappy antennas are you using, i.e., doublets fed with coax, open wire lines, etc., or end-fed wires? Or, some combination of types maybe? Rather that building up a bunch of tuners you might consider putting your efforts into erecting a set of antennas that all worked directly off a 50 or 75 ohm coax feedlines. Half-wave dipoles, one for each band, for example, or one or more of the multi-band arrangements (G5RV, fan and trap dipole, etc.). Dennis D. W7QHO Glendale, CA The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A) __ AMRadio mailing list Home:
