- 21. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Jim Allen <jim.allen@longhornband.net>
- Date: Fri, 15 Jul 2016 17:59:56 -0500
- I had one of those, not at 60', about half that. CC&Rs and all that. What is a "well designed truly balanced antenna tuner?" From what I've read, there aren't many. I have an MFJ 974HB. There is the
- /archives//html/TenTec/2016-07/msg00137.html (10,806 bytes)
- 22. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Jim Allen <jim.allen@longhornband.net>
- Date: Fri, 15 Jul 2016 18:05:46 -0500
- Indeed you did, and I quoted your exact terms, fishing for some practical suggestions. One sure doesn't want to have to rely on QST ads or eHam reviews! Since I run only QRP, every decibel is preciou
- /archives//html/TenTec/2016-07/msg00138.html (11,895 bytes)
- 23. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Gary J FollettDukes HiFi <dukeshifi@comcast.net>
- Date: Fri, 15 Jul 2016 21:31:29 -0500
- The old EF Johnson Matchbox, both the 275 watt and the 1 KW version were truly balanced output. That was the very best tuner design ever. The actual matching coil was the balun. Virtually every other
- /archives//html/TenTec/2016-07/msg00140.html (12,090 bytes)
- 24. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Carter <k8vt@ameritech.net>
- Date: Sat, 16 Jul 2016 10:13:09 -0400
- I had one of those [135 foot dipole fed with ladder line], not at > 60', about half that. CC&Rs and all that. The exact setup I've got, also at 30 feet. What is a "well designed truly balanced anten
- /archives//html/TenTec/2016-07/msg00141.html (9,379 bytes)
- 25. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Gary J FollettDukes HiFi <dukeshifi@comcast.net>
- Date: Sat, 16 Jul 2016 12:50:40 -0500
- Not wrong, just dated a bit in regards to WARC band operation. The balanced link matchbox design could match just about anything. It was not terribly lossy and it was easy to use. I have used them wi
- /archives//html/TenTec/2016-07/msg00145.html (16,262 bytes)
- 26. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Carter <k8vt@ameritech.net>
- Date: Sat, 16 Jul 2016 15:32:06 -0400
- I had one of those [135 foot dipole fed with ladder line], not at > 60', about half that. CC&Rs and all that. The exact setup I've got, also at 30 feet. What is a "well designed truly balanced antenn
- /archives//html/TenTec/2016-07/msg00146.html (10,024 bytes)
- 27. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "rick@dj0ip.de" <Rick@dj0ip.de>
- Date: Mon, 18 Jul 2016 07:38:00 +0200
- No, this balanced link matchbox was limited in its matching range and could definitely NOT match just about anything. Time and again we saw that at field day when using a Johnson Viking Matchbox 275w
- /archives//html/TenTec/2016-07/msg00162.html (18,311 bytes)
- 28. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "rick@dj0ip.de" <Rick@dj0ip.de>
- Date: Mon, 18 Jul 2016 07:48:02 +0200
- Stating individual cases where something worked proves nothing. I've had half a dozen cases where it did not work and other matchboxes did. In order to gain clarity on this, you must try it with all
- /archives//html/TenTec/2016-07/msg00163.html (11,662 bytes)
- 29. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Gary J FollettDukes HiFi <dukeshifi@comcast.net>
- Date: Mon, 18 Jul 2016 01:09:59 -0500
- Ill just stay with resonant antennas Gary _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
- /archives//html/TenTec/2016-07/msg00166.html (13,053 bytes)
- 30. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "rick@dj0ip.de" <Rick@dj0ip.de>
- Date: Mon, 18 Jul 2016 09:25:02 +0200
- Roger, then let's stay with resonant antennas. The feedpoint impedance is not only dependant on the impedance of the antenna but also on the transformation of impedance due to the specific length of
- /archives//html/TenTec/2016-07/msg00167.html (15,512 bytes)
- 31. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Gary J FollettDukes HiFi <dukeshifi@comcast.net>
- Date: Mon, 18 Jul 2016 02:41:59 -0500
- Well, actually it does. As I pointed out, with a RESONANT cubical quad, driven with 470 Ohm Dentron parallel line, I got a perfect match on 20, 15 and 10. This was an efficient antenna with efficien
- /archives//html/TenTec/2016-07/msg00168.html (16,523 bytes)
- 32. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Jim Brown <k9yc@audiosystemsgroup.com>
- Date: Mon, 18 Jul 2016 00:46:11 -0700
- On Mon,7/18/2016 12:25 AM, rick@dj0ip.de wrote: Roger, then let's stay with resonant antennas. The feedpoint impedance is not only dependant on the impedance of the antenna but also on the transforma
- /archives//html/TenTec/2016-07/msg00169.html (11,689 bytes)
- 33. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Jim Brown <k9yc@audiosystemsgroup.com>
- Date: Mon, 18 Jul 2016 00:49:43 -0700
- NO! The feedpoint impedance is AT THE FEEDPOINT -- that is, up in the air where we connect the feedline! And THAT is determined by the antenna, it's surroundings (soil, mounting height, other objects
- /archives//html/TenTec/2016-07/msg00170.html (9,878 bytes)
- 34. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "rick@dj0ip.de" <Rick@dj0ip.de>
- Date: Mon, 18 Jul 2016 09:56:50 +0200
- Correct; was a typo. I meant the shack impedance or impedance seen by the matchbox. Sorry, I'm on vacation with a tiny little tablet, typing in a hurry before my XYL yells for me to QRT. Rick antenna
- /archives//html/TenTec/2016-07/msg00171.html (10,653 bytes)
- 35. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "rick@dj0ip.de" <Rick@dj0ip.de>
- Date: Mon, 18 Jul 2016 10:10:48 +0200
- No, it sounds like you joined the conversation late, Jim. And BTW, I started this thread and have followed every email on the drifting topic. All that you wrote is well known to me Jim, and was not t
- /archives//html/TenTec/2016-07/msg00172.html (13,757 bytes)
- 36. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "Paul Christensen" <w9ac@arrl.net>
- Date: Mon, 18 Jul 2016 07:47:02 -0400
- Rick, Nice discussion on your website. I'm presently using a symmetrical switch-L tuner at my home QTH. It's mounted outside the shack in a pressurized NEMA enclosure. A 1:1 choke is placed on the in
- /archives//html/TenTec/2016-07/msg00173.html (12,054 bytes)
- 37. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Jim Allen <jim.allen@longhornband.net>
- Date: Mon, 18 Jul 2016 08:30:44 -0500
- Has anyone done similar testing on the autotuners or remote autotuners? 73 de W6OGC Jim Allen Sent from my iPad _______________________________________________ TenTec mailing list TenTec@contesting.c
- /archives//html/TenTec/2016-07/msg00174.html (9,202 bytes)
- 38. Re: [TenTec] OT: Question to the group (score: 1)
- Author: Al Gulseth <wb5jnc@centurytel.net>
- Date: Mon, 18 Jul 2016 08:38:35 -0500
- Paul, Why the need for a rotating turret? Wouldn't switching taps accomplish the same thing? Cliplead taps on the coil have been a staple of link coupled systems since the early days of ham radio, an
- /archives//html/TenTec/2016-07/msg00175.html (10,608 bytes)
- 39. Re: [TenTec] OT: Question to the group (score: 1)
- Author: "Paul Christensen" <w9ac@arrl.net>
- Date: Mon, 18 Jul 2016 10:06:12 -0400
- Shortest lead lengths. This concept closely approximates a single coil plug-in jack bar. B&W once made a similar device for PA output networks in the pre-WWII era when just about every stage from os
- /archives//html/TenTec/2016-07/msg00176.html (10,943 bytes)
- 40. Re: [TenTec] OT: Question to the group (score: 1)
- Author: <ka9egw@ka9egw.com>
- Date: Mon, 18 Jul 2016 09:08:32 -0500
- Haven't felt a need. What my slightly-modified jvm can't tune (very little it can't) my 4229-L-network-and-dual-core-balun handles nicely. That being said I did just recently popped for a used dual d
- /archives//html/TenTec/2016-07/msg00177.html (11,723 bytes)
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