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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Detuning\/Grounding\s+Xmit\s+Antenna\s+while\s+on\s+RX\s*$/: 5 ]

Total 5 documents matching your query.

1. Topband: Detuning/Grounding Xmit Antenna while on RX (score: 1): Author: "Bob Garrett" <rgarrett5@comcast.net>; Date: Fri, 15 Nov 2013 22:46:28 -0500; Greetings Topbanders, I have an 85 foot shunt fed tower that I use on TB. I have a HI-Z 4 Square and some short beverages. The performance of the RX antennas definitely improves (less noise and bette; /archives//html/Topband/2013-11/msg00220.html (6,859 bytes)
2. Re: Topband: Detuning/Grounding Xmit Antenna while on RX (score: 1): Author: Jon Zaimes AA1K <jz73@verizon.net>; Date: Sat, 16 Nov 2013 06:54:41 -0500; Hi Bob, You could use a vacuum relay and key it from the keyer or rig line that is timed keying (such as for an amp). You want it open when transmitting of course. Might even be able to use a smaller; /archives//html/Topband/2013-11/msg00226.html (9,239 bytes)
3. Re: Topband: Detuning/Grounding Xmit Antenna while on RX (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 16 Nov 2013 07:00:29 -0500; I have an 85 foot shunt fed tower that I use on TB. I have a HI-Z 4 Square and some short beverages. The performance of the RX antennas definitely improves (less noise and better directivity) when th; /archives//html/Topband/2013-11/msg00227.html (9,053 bytes)
4. Re: Topband: Detuning/Grounding Xmit Antenna while on RX (score: 1): Author: N1BUG <paul@n1bug.com>; Date: Sat, 16 Nov 2013 07:06:51 -0500; Can someone explain why grounding the feed of a shunt fed tower prevents it from re-radiating noise? The tower is already grounded. I don't understand how grounding the coax port looking into the gam; /archives//html/Topband/2013-11/msg00228.html (7,523 bytes)
5. Re: Topband: Detuning/Grounding Xmit Antenna while on RX (score: 1): Author: "John K9UWA" <john@johnjeanantiqueradio.com>; Date: Sat, 16 Nov 2013 08:33:14 -0500; Years ago at old QTH I did that. Feedline from Amp to Shunt Fed tower was set at 1/2 wave electrical length. Then between the Amp and Transmitter I placed a Relay box that Grounded the Transmit Ante; /archives//html/Topband/2013-11/msg00229.html (8,940 bytes)

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