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Author Topic: Venturing into 2m SSB territory.  (Read 10051 times)
AK4YH
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« Reply #45 on: September 26, 2017, 10:16:58 PM »

Great thank you!

Gil.
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AK4YH
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« Reply #46 on: October 02, 2017, 11:59:14 AM »

https://youtu.be/LaRsBtT52kc

Gil.
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W2WDX
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« Reply #47 on: October 06, 2017, 01:42:38 PM »

What I am about to say is purely anecdotal, so take it for what its worth. I have always used a Yaesu FT-221R (with the Mutek Board) for SSB. Not the best receiver, but I get out there.

Here's the thing. It's not really about the radio for 2M, it's about gain and loss. Antennas and feedline. I have operated 2m SSB at sea level (literally) for years. Recently, I moved into a 24 story co-op in the hills in the northern Bronx of New York City. After much negotiation with the Board of Directors and the City Buildings Department, I was able to get permission and permits to put up some antennas on the roof. One HF dipole, a few VHF/UHF verts, and a VHF/UHF Yagi setup. I was careful what I chose in terms of directional antennas, since access to the roof is limited. Even though I am the only occupant with a key, I still need to be "escorted" by building management employees.

I ended up with a 22 el loop fed Yagi for 2M SSB. I use a mast mounted LNA. The feedline (268') is Times Microwave LMR-1700. Here's my experience. At a total elevation of 434' above sea level (I can see the ocean from the roof), the extreme low-loss of the feedline, and the 20dB gain and low-noise Pre-amplifier, the silence on my old FT-221R was such that I thought I had a problem with the radio. Unplugging the antenna lead on the back of radio produced only a slight decrease in noise. So most of what I thought was atmospheric noise all these years in other situations, apparently was actually just combined noise from feedlines, poor antennas, poor grounding, and such things. The radio is actually quiet and sensitive. I was clearly hearing stations drifting in from the Carolinas over the ocean, likely tropo propagated.

The point being in my case, I learned even an old radio benefits from one simple basic fact; on 2m SSB make sure you have gain and low loss, on transmit of course, but more importantly on receive. Simple things like mast mounted LNA vs. one stuck at the transceiver means the difference between amplifying feed-line noise or amplifying actual signals.
« Last Edit: October 06, 2017, 01:46:03 PM by W2WDX » Logged

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