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321. Re: [TenTec] Eagle AT slow? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 7 Sep 2014 21:17:20 -0500
As I stated earlier, the ATU for the Orion series and the Omni VII contains its own processor with only ATU duties to attend. Same for the AH-2. Otherwise, the ATU routine in the Eagle is handled by
/archives//html/TenTec/2014-09/msg00054.html (9,967 bytes)

322. Re: [TenTec] Eagle AT slow? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 7 Sep 2014 21:26:07 -0500
I can explain why the tuner has to retune on the same frequency.......as stated by the operator " Leaving it on that frequency, a minute or so later a second try also took 15 seconds. A third tune, o
/archives//html/TenTec/2014-09/msg00055.html (11,974 bytes)

323. Re: [TenTec] Eagle AT slow? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Mon, 8 Sep 2014 07:15:09 -0500
John brings up a point not mentioned earlier, that is the MFJ reads and stores the frequency information while the Eagle ATU only stores the band data. Thus when RF is applied the MFJ reads the RF an
/archives//html/TenTec/2014-09/msg00067.html (11,296 bytes)

324. Re: [TenTec] Eagle Tuner (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Mon, 8 Sep 2014 18:00:08 -0500
If you set the CONFIG menu for the tuner to NO, you won't have to do that as it will come up in the bypass mode. 73 Bob, K4TAX Sent from my iPhone
/archives//html/TenTec/2014-09/msg00087.html (10,307 bytes)

325. Re: [TenTec] Eagle Tuner (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Mon, 8 Sep 2014 18:18:18 -0500
A true folded dipole fed with open wire line and a 4:1 balun used as it is supposed to be used. Bob, K4TAX Sent from my iPhone
/archives//html/TenTec/2014-09/msg00088.html (10,320 bytes)

326. Re: [TenTec] Eagle Tuner (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 9 Sep 2014 09:33:54 -0500
Yes, most internal tuners are very limited with a matching range SWR of typically 3:1 or less. The design of the Tentec internal tuners provides for the SWR matching range to be typically 10:1. Of co
/archives//html/TenTec/2014-09/msg00095.html (10,790 bytes)

327. Re: [TenTec] Eagle Tuner (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 9 Sep 2014 09:47:12 -0500
I'll be building and putting up a folded dipole for 160M. Wire spacing will be about 3" to 4" and the feed will be 300 ohm line as it provides a better match than 450 ohm or 600 ohm line. I do have a
/archives//html/TenTec/2014-09/msg00096.html (13,296 bytes)

328. Re: [TenTec] Eagle Tuner (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 9 Sep 2014 17:02:08 -0500
I wondered that too. I thought a Zepp would be and end fed dipole fed with 1/4 wave of open wire line. Of course there is the extended Zepp and the Extended Double Zepp configuration and a few others
/archives//html/TenTec/2014-09/msg00104.html (13,352 bytes)

329. Re: [TenTec] Eagle Tuner (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 9 Sep 2014 17:13:43 -0500
In working the same station some 300 miles away on a regular basis, I find his signal to be about the same on the two antennas but the noise is less on the folded dipole. Both the dipole and folded d
/archives//html/TenTec/2014-09/msg00105.html (11,437 bytes)

330. Re: [TenTec] Signal to noise (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Thu, 11 Sep 2014 12:48:17 -0500
I usually will stop to talk. Very rarely will I engage a QSO while in motion. Besides, I seem to recall state law requires both hands on the steering wheel unless required for vehicle operation. To m
/archives//html/TenTec/2014-09/msg00124.html (10,473 bytes)

331. Re: [TenTec] Orion II Main Rx (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Fri, 12 Sep 2014 20:14:58 -0500
Seems would be time for internal connector cleaning project. It does take time to remove one at a time, use a good contact cleaner, Deoxit etc, small amount applied to a Q Tip, wipe the male pins and
/archives//html/TenTec/2014-09/msg00139.html (8,468 bytes)

332. Re: [TenTec] Zepp? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 13 Sep 2014 16:00:28 -0500
My first thought is one should be using a 1:1 balun which would be a current balun and not a 4:1 voltage balun. The described antenna would likely have a feed point Z of about 75 ohms, based on lengt
/archives//html/TenTec/2014-09/msg00153.html (16,182 bytes)

333. Re: [TenTec] Zepp? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 13 Sep 2014 20:13:20 -0500
My take is to bring the balanced line all the way inside to the tuner. There is certainly no harm in that. At the tuner output use a 1:1 current balun between the tuner and the balanced line. A short
/archives//html/TenTec/2014-09/msg00156.html (11,531 bytes)

334. Re: [TenTec] Zepp? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 13 Sep 2014 20:55:35 -0500
I been puzzled by the most frequent and most common uses of the 4:1 balun. It seems that hams believe necessary to use a balanced feed system, open wire line and such that they must employee a 4:1 ba
/archives//html/TenTec/2014-09/msg00158.html (13,340 bytes)

335. Re: [TenTec] Zepp? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 13 Sep 2014 20:59:09 -0500
Because the MFJ 929 tuner only has unbalanced outputs thus no provision for feeding a balanced load. 73 Bob, K4TAX Yes.... so, I try my question again: Why does he need a balun? Why not just connect
/archives//html/TenTec/2014-09/msg00159.html (11,672 bytes)

336. Re: [TenTec] Zepp? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 14 Sep 2014 13:10:38 -0500
Regarding baluns of note, the power rating of most baluns will be stated for matched conditions. If the balun is operating with a SWR of say 3:1 or greater, one should de-rate the power rating. Of no
/archives//html/TenTec/2014-09/msg00175.html (13,338 bytes)

337. Re: [TenTec] Antenna names (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 14 Sep 2014 22:58:28 -0500
The developer of the G5RV basically states that it is optimized for 20M, thus typically having a low SWR of 1.8:1 on that band. Other bands the G5RV will have a higher SWR in the range of 5:1. Thus o
/archives//html/TenTec/2014-09/msg00188.html (14,582 bytes)

338. Re: [TenTec] SWR is a DUMB Indicator of Antenna Performance (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Mon, 15 Sep 2014 09:01:13 -0500
It seems that here we fall largely to the victim of verbal semantics. Almost every radio I've owned, as well as the related printed manual, gives the indication there is a place to connect "the anten
/archives//html/TenTec/2014-09/msg00194.html (14,045 bytes)

339. Re: [TenTec] Zepp (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Mon, 15 Sep 2014 14:04:14 -0500
In review of the ARRL Handbook, Ed. 2014, Chapter 21.7, there are clearly two distinct examples of Zepp antennas. One being 1/2 wavelength and end fed with open wire line and the 2nd being a center f
/archives//html/TenTec/2014-09/msg00201.html (12,098 bytes)

340. Re: [TenTec] Zepp (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Mon, 15 Sep 2014 16:11:05 -0500
Yes Rick. There are a couple of factors not clearly stated. In using the 468 number it does account for K factor which is the ratio of conductor diameter to wavelength. However, the 468 does also pre
/archives//html/TenTec/2014-09/msg00205.html (15,734 bytes)

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