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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+TX\s+ANT\s+TO\s+RX\s+ANT\s+COUPLING\s*$/: 13 ]

Total 13 documents matching your query.

1. Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "Bill and Liz" <magoo@isp.ca>
Date: Sun, 17 Jun 2012 17:34:47 -0400
I have been following the thread with interest. I have a K9AY and a DO loop located within 60 to 75 ft of the TX vertical at our summer home. Interestingly, I find both these antennas very quiet with
/archives//html/Topband/2012-06/msg00147.html (7,667 bytes)

2. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: W2XJ <w2xj@nyc.rr.com>
Date: Sun, 17 Jun 2012 17:53:25 -0400
Probably part has to do with the fact that your vertical is 1/8 wavelength and rule of thumb is 1/8 wavelength or less do no have a significant influence unless extremely close. _____________________
/archives//html/Topband/2012-06/msg00148.html (8,011 bytes)

3. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "ZR" <zr@jeremy.mv.com>
Date: Sun, 17 Jun 2012 19:59:39 -0400
Sounds like a 1/4 wave vertical to me if its toploaded enough to resonate. Do the radials pass over or under the Beverage? Carl KM1H Carl KM1H _______________________________________________ UR RST I
/archives//html/Topband/2012-06/msg00149.html (9,123 bytes)

4. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Sun, 17 Jun 2012 21:37:09 -0400
Hi Bill The resonance element reradiate noise and also the signal. If you think about why a yagi works, all elements reradiate the signal from the driven elements, but what about on reception, . It i
/archives//html/Topband/2012-06/msg00151.html (8,695 bytes)

5. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: W2PM <w2pm@aol.com>
Date: Mon, 18 Jun 2012 06:50:43 -0400
Do you have much noise in the first place to reradiate? Line noise also is very spotty along a power line - along the same line of wires any nasty arcing noise can be very strong or very weak at cert
/archives//html/Topband/2012-06/msg00159.html (8,832 bytes)

6. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: <mikefurrey@att.net>
Date: Mon, 18 Jun 2012 09:34:48 -0500
I perhaps have maybe a worst case scenario ... I live on a 60' by 90' lot in Houston. Fortunately I have some very nice tall pine trees that support my inverted L. It has one elevated radial in the s
/archives//html/Topband/2012-06/msg00161.html (10,047 bytes)

7. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: <mikefurrey@att.net>
Date: Wed, 20 Jun 2012 12:06:36 -0500
Hi Jim, I just use a simple SPST open frame relay to ground the vertical section of the antenna and no I do not use QSK ... yet ... (need to add it to the old amp) The vertical section is about 60 an
/archives//html/Topband/2012-06/msg00167.html (12,862 bytes)

8. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 20 Jun 2012 14:09:00 -0400
There are two potential problems with this. As general rules: 1.) Grounding any antenna which is dependent on a ground system to be resonant will maximize reradiation. 2.) Resonant elevated radials,
/archives//html/Topband/2012-06/msg00168.html (16,440 bytes)

9. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: Herb Schoenbohm <herbs@vitelcom.net>
Date: Wed, 20 Jun 2012 15:45:47 -0400
Tom, This is not encouraging news for those of us with towers already ground and are either shunt fed or cage fed. Even though they are not resonate, although top loaded and approaching resonance, it
/archives//html/Topband/2012-06/msg00169.html (9,892 bytes)

10. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 20 Jun 2012 16:45:03 -0400
Doesn't this suggest that there is a role here for cut and try? Take a set of clip leads to the base of the tower and experiment? 73, Pete N4ZR The World Contest Station Database, at www.conteststati
/archives//html/Topband/2012-06/msg00171.html (10,821 bytes)

11. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: Guy Olinger K2AV <olinger@bellsouth.net>
Date: Wed, 20 Jun 2012 17:04:51 -0400
If one's tower does not have radials, is set in concrete, with minimal direct contact with earth (say less than a linear foot, with nothing more than the usual lightning treatment attached to the bas
/archives//html/Topband/2012-06/msg00172.html (13,508 bytes)

12. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: Herb Schoenbohm <herbs@vitelcom.net>
Date: Wed, 20 Jun 2012 17:50:05 -0400
Great idea Pete but I also may run head long into false positive results with so many Beverages (12) and each with a different possible indications. Here with the masking over of any subtle changes b
/archives//html/Topband/2012-06/msg00174.html (12,360 bytes)

13. Re: Topband: TX ANT TO RX ANT COUPLING (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 20 Jun 2012 22:40:30 -0400
Shunt fed towers can be detuned, or taken out of the picture by phasing a small sample of signals into the RX antenna. It depends on what is on the tower, the shunt system, and the grounding. It can
/archives//html/Topband/2012-06/msg00177.html (9,954 bytes)

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