[TowerTalk] Antennas for SO2R station

[Gary]

I'm one of the guys running two radios on one antenna. I'm using Yaesu radios that have roofing filters. Into a trapped vertical. It works fine.

73,
Gary kk0sd

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Mike Smith VE9AA
Sent: Monday, March 1, 2021 2:23 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Antennas for SO2R station

Can't really improve too much on what Steve wrote.  I will reiterate that I couldn't get a brand new IC-7300 to work here in my SO2R setup, (you can find my review on eHam) whereas 2 older IC-7410's and a lowly , nearly antique/classic  IC-746 work just fine. (I do hear rumours that some folks are using IC7300's in SO2R setups however)

My SO2R stn contains a mix of verticals and 4-squares(verticals) for the 'main' radio (#1) and then a big multiband (horizontal) antenna for radio #2 (usually the S&P radio) located 150-300' away from the other (vertical) antennas.  No stubs, no BPF's...cross polarization, good radios and antenna separation does the trick.  

I did it this way as I wasn't sure I wanted to invest a ton of money in 2 sets of BPF's, a plethora of stubs, and a way to switch them all out back and forth between radios.  Certainly well into thousands of dollars. More if automatic, tracking radios.

Am I the loudest stn up here? Nope.

Do I have good (cheap) fun?

Yup!

GL Jaimie

AA


WW3S wrote:

Just wondering if anyone uses 2 antennas on the same mast for SO2R?

---------------------------------------------------------------------
There are stations that go a step further and use the same antenna for SO2R, with a triplexer (or even quadplexer). Of course, with a SteppIR you can't do that.

If you are planning station changes anyway, my suggestion is to replace the 7300. It's a great radio, at a great price, for a SO1R station, but the A/D dynamic range limits it in SO2R applications. The 2nd change I would make is to replace the SteppIR with a modern tribander and triplexer.

73,
Steve, N2IC


Mike, Coreen & Corey
Keswick Ridge, NB


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