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Total 14 documents matching your query.

1. Re: [TenTec] Palstar tuner (score: 1): Author: Jeff <n3jbh@yahoo.com>; Date: Thu, 21 May 2009 03:35:23 -0700 (PDT); I have a palstar tuner and as a tuner think it is great. BUT !!! mine the model AT1KP has a really crappy balun. The balun fried at 600 watts and is grossly under sized. To make matters worse the use; /archives//html/TenTec/2009-05/msg00261.html (7,745 bytes)
2. Re: [TenTec] Palstar tuner (score: 1): Author: "Tony" <w4foa@comcast.net>; Date: Thu, 21 May 2009 06:46:24 -0400; Jeff, Find a Dentron Super Super Tuner and be "done" with tuner problems. The SST can be found for a fair price and it is built like a BATTLESHIP. 73 Tony, W4FOA PS: Oh, BTW I have a TenTEc 238 too (; /archives//html/TenTec/2009-05/msg00262.html (8,495 bytes)
3. Re: [TenTec] Palstar tuner (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 21 May 2009 10:58:35 -0600; That's the fundamental problem with tuning trough a balun. If the load Z is high the voltage goes high and saturates the core which leads to much loss and heating. If the load Z is very low, the wire; /archives//html/TenTec/2009-05/msg00272.html (9,221 bytes)
4. Re: [TenTec] Palstar tuner (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Thu, 21 May 2009 19:25:04 +0100; That's not true of all baluns. The flux in the ferrite core of a 1:1 Guanella balun wound with coax depends on the common-mode current, not on the differential-mode current; so it's not directly rela; /archives//html/TenTec/2009-05/msg00276.html (7,861 bytes)
5. Re: [TenTec] Palstar tuner (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 21 May 2009 14:45:49 -0600; Nearly aways the balun on a tuner is a voltage balun and it is sensitive to applied voltage. Voltage is what saturates the core through the magnetizing inductance. With power applied, a high impedanc; /archives//html/TenTec/2009-05/msg00277.html (8,674 bytes)
6. Re: [TenTec] Palstar tuner (score: 1): Author: Steve Hunt <steve@karinya.net>; Date: Thu, 21 May 2009 22:05:23 +0100; Jerry, Yes, it makes you wonder why tuner manufacturers persist in fitting *voltage* baluns when what we're usually trying to do is balance the *currents*! But I see some of them are learning, and in; /archives//html/TenTec/2009-05/msg00278.html (8,131 bytes)
7. Re: [TenTec] Palstar tuner (score: 1): Author: Arthur Trampler <atrampler@att.net>; Date: Thu, 21 May 2009 14:48:14 -0700 (PDT); Isn't one of the key distinctions of the Ten Tec 238/B/C that these are switched L networks, rather than T-networks, as I believe the Palstar is? Some years back QST reviewed several external auto-; /archives//html/TenTec/2009-05/msg00279.html (8,271 bytes)
8. Re: [TenTec] Palstar tuner (score: 1): Author: Richards <jruing@ameritech.net>; Date: Thu, 21 May 2009 19:13:16 -0400; I did not draw the same conclusion from the piece. I purchased the Palstar tuner because they seemed rather close in performance and I took the advice of several local hams in the lunch bunch. I thou; /archives//html/TenTec/2009-05/msg00280.html (8,652 bytes)
9. Re: [TenTec] Palstar tuner (score: 1): Author: Stuart Rohre <rohre@arlut.utexas.edu>; Date: Thu, 21 May 2009 20:37:52 -0500; Inherently in theory, the L match is less lossy, because you have one less physical component. Since real components are not perfect, the more you have, (like the 3 in the T circuit, vs. 2 in the L),; /archives//html/TenTec/2009-05/msg00282.html (8,031 bytes)
10. Re: [TenTec] Palstar tuner (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 21 May 2009 21:34:39 -0600; Yes. Because it has only one possible loaded Q for any given impedance ratio, the circulating current in the circuit is minimized. In a T or PI the loaded Q can be higher resulting in more circulatin; /archives//html/TenTec/2009-05/msg00284.html (10,058 bytes)
11. Re: [TenTec] Palstar tuner (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 21 May 2009 21:37:17 -0600; The difference between 60% and 95% efficiency won't be detectable at the receiver on HF, that's less than half an S-unit. But it will be most noticeable in the temperature rise of the tuner, primaril; /archives//html/TenTec/2009-05/msg00285.html (9,854 bytes)
12. Re: [TenTec] Palstar tuner (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Thu, 21 May 2009 21:43:02 -0600; Its not so much the added parts, because capacitors have very low losses, its the increased coil current caused by the higher loaded Q of the pi and T over the L that makes the loss greater. And that; /archives//html/TenTec/2009-05/msg00286.html (9,261 bytes)
13. Re: [TenTec] Palstar tuner (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Fri, 22 May 2009 00:15:53 -0400; I remember the reviews. I think you are correct. But if you are going to want me to translate latin after all these years...god help us all !! LOL LOL 73 Isn't one of the key distinctions of the Ten; /archives//html/TenTec/2009-05/msg00288.html (9,727 bytes)
14. Re: [TenTec] Palstar tuner (score: 1): Author: <atrampler@att.net>; Date: Thu, 21 May 2009 23:23:58 -0500; that wasn't latin so much as high school economics... the famous "all else being equal" just like the famous "rational consumer" My XYL is VERY understanding, bought me my Omni VI and supports my hob; /archives//html/TenTec/2009-05/msg00289.html (10,899 bytes)

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