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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[CQ\-Contest\]\s+Multiple\s+direction\s+antennas\s+on\s+one\s+radio\.\.\.why\?\s*$/: 14 ]

Total 14 documents matching your query.

1. [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 19 Oct 2011 00:30:48 -0400
This has my curiousity.....does anyone know what stations doing this really do? When I have a splitter, power divides from the exciter. Each amp has fixed gain. If I have one 10 dB gain amp and a 100
/archives//html/CQ-Contest/2011-10/msg00239.html (9,731 bytes)

2. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Mark Beckwith" <n5ot@n5ot.com>
Date: Wed, 19 Oct 2011 08:26:29 -0500
N5OT does this. I have a tee in the coax and connect two antennas to it. To transmit and receive in two directions at the same time. This is done intentionally, if that's what you mean. I know my an
/archives//html/CQ-Contest/2011-10/msg00243.html (9,536 bytes)

3. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Jack Haverty." <k3fiv@arrl.net>
Date: Wed, 19 Oct 2011 10:16:58 -0700
My QTH is on the California coast. I use just a wire antenna, so I hear and speak softly in multiple directions. It's common in contests, especially after the initial frenzy has passed, for me to hea
/archives//html/CQ-Contest/2011-10/msg00244.html (12,597 bytes)

4. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: e73m@e73m.com
Date: Wed, 19 Oct 2011 18:27:21 -0500
I inserted my remarks in your text below... Single band two amps with two 1/4 wl RG59. Multiband for two amps, they use something like magic-t spltiter from your website and available here http://www
/archives//html/CQ-Contest/2011-10/msg00246.html (12,502 bytes)

5. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: e73m@e73m.com
Date: Wed, 19 Oct 2011 18:48:56 -0500
Update, I found the other place to buy splitters, even for 4 amps, http://www.communication-concepts.com/new_page_17.htm 73 Danny E73M _______________________________________________ CQ-Contest maili
/archives//html/CQ-Contest/2011-10/msg00248.html (11,479 bytes)

6. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: e73m@e73m.com
Date: Thu, 20 Oct 2011 03:14:43 -0500
Yes Igor, I guess any stack match can be used. Here is another commercial product, note the underlined text:"Those splitters are use at different contest-stations worldwide ! link is here http://www.
/archives//html/CQ-Contest/2011-10/msg00251.html (14,254 bytes)

7. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Igor Sokolov" <ua9cdc@gmail.com>
Date: Thu, 20 Oct 2011 09:58:01 +0600
Danny, Microham stack switch can split into 2 or 3 amp http://www.microham.com/index1.html Then one can split output of each amp into 2 or 3 antenna with anpther stack switch. 73, Igor UA9CDC _______
/archives//html/CQ-Contest/2011-10/msg00252.html (13,330 bytes)

8. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: W0MU Mike Fatchett <w0mu@w0mu.com>
Date: Wed, 19 Oct 2011 07:04:31 -0600
I suspect that they are running 4 different 1.5kw or better amps to the 4 antennas. I have no clue which one they might be listening on. Maybe they didn't realize that listening to 4 at the same time
/archives//html/CQ-Contest/2011-10/msg00253.html (11,689 bytes)

9. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: Bill Tippett <btippett@alum.mit.edu>
Date: Thu, 20 Oct 2011 12:12:25 -0400
I've been doing this with my 10m 3-stack since installing it in 1999. When the band is open to EU (local mornings), my bottom 2 are usually on EU and the top is SE for Caribbean, SA and long path Far
/archives//html/CQ-Contest/2011-10/msg00260.html (7,577 bytes)

10. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: David Gilbert <xdavid@cis-broadband.com>
Date: Thu, 20 Oct 2011 10:25:11 -0700
Hi, Tom. I have no first hand knowledge of such a setup, but these were my thoughts after watching the ZX5J video. I assume that having antennas simultaneously pointed in four directions means that t
/archives//html/CQ-Contest/2011-10/msg00263.html (12,368 bytes)

11. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Thu, 20 Oct 2011 20:52:09 -0400
They would automatically crank back and up with an exciter into a splitter. Do a two-way, and each amp probably gets -3.5 dB drive. Do a 4 way, and it is -6.5 or so per amp. Do a 3-way, and it is ei
/archives//html/CQ-Contest/2011-10/msg00264.html (11,468 bytes)

12. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: Rob Van Geen <rvangeen@gmail.com>
Date: Thu, 20 Oct 2011 17:16:57 -1000
I sometimes split 5 watts into two directions, with the same effect of clearing the QRM from my run frequency. ;-) - Rob, NH6V _______________________________________________ CQ-Contest mailing list
/archives//html/CQ-Contest/2011-10/msg00266.html (11,518 bytes)

13. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: "Dale Putnam " <daleputnam@hotmail.com>
Date: Fri, 21 Oct 2011 06:59:41 +0000
And it. Doesn't matter to me how many antennas you have or where they are pointed. If I'm calling you because I hear you and you don't answer... You don't get a third chance. I'll call a second time,
/archives//html/CQ-Contest/2011-10/msg00273.html (10,290 bytes)

14. Re: [CQ-Contest] Multiple direction antennas on one radio...why? (score: 1)
Author: Rudy Bakalov <r_bakalov@yahoo.com>
Date: Fri, 21 Oct 2011 06:56:39 -0400
Tom, Another point to consider is that having an amp for each antenna allows you to use off the shelf components, such as coax, switches, baluns, etc. compared to custom or not so common 10 KW rated
/archives//html/CQ-Contest/2011-10/msg00277.html (12,569 bytes)


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