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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Towertalk\]\s+Ground\s+the\s+coax\s+braid\s+on\s+LPDA\s+or\s+not\?\s*$/: 11 ]

Total 11 documents matching your query.

1. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: lsica@attbi.com (Louis Sica, Jr.)
Date: Mon, 9 Dec 2002 14:19:02 -0600
I have a T8 8 element LPDA on top of a 50 foot tower. That same tower also has a DX-A half sloper on it. The problem is that since the LPDA boom is electrically isolated from the tower, I don't get t
/archives//html/Towertalk/2002-12/msg00287.html (8,570 bytes)

2. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: ccc@space.mit.edu (Chuck Counselman)
Date: Mon, 9 Dec 2002 16:08:47 -0500
I'm not familiar with that LPDA. Do you know _why_ its boom is isolated? I would expect that, to preserve the balance of the antenna (I'm thinking primarily of electromagnetic balance, but mass/weigh
/archives//html/Towertalk/2002-12/msg00289.html (9,920 bytes)

3. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: stevek@jmr.com (Steve Katz)
Date: Mon, 9 Dec 2002 13:42:35 -0800
I'd call Chuck at Tennadyne and ask him. The T8 and other Tennadyne LPDAs have square aluminum booms that are insulated from their support mast because the booms themselves are the lines which connec
/archives//html/Towertalk/2002-12/msg00290.html (11,753 bytes)

4. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: coneal@attbi.com (Chuck O'Neal)
Date: Mon, 9 Dec 2002 17:04:08 -0500
Hi ! The reason not to connect the boom to the mast is that the boom, = actually a dual boom, on the Tennadyne log periodics "is" the feedline. Tennadyne use a dual = boom as the interconnecting tran
/archives//html/Towertalk/2002-12/msg00291.html (8,959 bytes)

5. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: ccc@space.mit.edu (Chuck Counselman)
Date: Mon, 9 Dec 2002 17:31:31 -0500
Understood. If only he'd written "dual boom" or "booms," plural.... :-( Thanks. -Chuck, W1HIS
/archives//html/Towertalk/2002-12/msg00293.html (8,365 bytes)

6. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: spelunk.sueno@prodigy.net (EUGENE SMAR)
Date: Mon, 9 Dec 2002 17:27:55 -0500
Lou: Just a guess on my part, but maybe you could consider using a reactive component (inductor?) whose impedance is let's say ten times the coax feed (500 Ohms) at the lowest freq of the LP. Many fo
/archives//html/Towertalk/2002-12/msg00294.html (10,469 bytes)

7. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: lsica@attbi.com (Louis Sica, Jr.)
Date: Mon, 9 Dec 2002 18:40:08 -0600
Hello Steve Chuck was the one who recommended to me to ground the coax at the top of the tower, but other local hams who've had Tennadyne LPDA's (T10's) have told me how they've noted performance deg
/archives//html/Towertalk/2002-12/msg00296.html (8,871 bytes)

8. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: K7LXC@aol.com (K7LXC@aol.com)
Date: Mon, 9 Dec 2002 20:49:43 EST
me Cheers, Steve K7LXC TOWER TECH
/archives//html/Towertalk/2002-12/msg00298.html (8,319 bytes)

9. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: W4EF@dellroy.com (Michael Tope)
Date: Tue, 10 Dec 2002 01:41:36 -0800
I would put a choke balun (coax wound into coil) between the point where the coax leaves the boom and starts down the mast and then ground the coax shield to the mast on the transmitter (shack) side
/archives//html/Towertalk/2002-12/msg00304.html (11,076 bytes)

10. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 10 Dec 2002 06:39:57 -0600
How about using a RELAY to ground the coax shield to the tower when you want to use the sloper and OPEN when you want to use the LPDA? You could mount a panel barrel connector on an insulated piece o
/archives//html/Towertalk/2002-12/msg00319.html (8,943 bytes)

11. [Towertalk] Ground the coax braid on LPDA or not? (score: 1)
Author: n4kg@juno.com (n4kg@juno.com)
Date: Tue, 10 Dec 2002 06:39:57 -0600
How about using a RELAY to ground the coax shield to the tower when you want to use the sloper and OPEN when you want to use the LPDA? You could mount a panel barrel connector on an insulated piece o
/archives//html/Towertalk/2002-12/msg00320.html (8,925 bytes)


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