Hi folks..... Can someone please see if they have ANY coupling when between ANT1 and ANT2 positions on the FRONT panel? I find that with only one antenna, connected only to the rear panel ANT1 SO 239
I can do the same with only the ground side of the antenna connected at the 238B antenna tuner. The Orion has a lot of gain, and often I can copy signals with nothing connected to the antenna port at
Duane....please explain a tad more. As I mentioned, I can switch from ANT1 on the front panel to ANT2 on the front panel while having the only antenna on ANT1 on the rear panel. When switching betwee
John - I should have mentioned that on my OI 565 - I did have an HP608 on the ANT1 port and a 0.1 uv 14 mhz signal was clearly audible . I suspect the switch isolation is at best only in the order of
John, My Orion 1 exhibits what you describe - I have nothing connected to Ant 2, but if I switch from Ant 1 with a signal on it to Ant 2, I can still hear the signal, though faintly, from the Ant 1 i
Thank you Duane.....several others have now responded that they are experiencing the same thing. Sounds like some coupling is taking place. _______________________________________________ TenTec mail
I just listened on my Orion. I found an S9 CW station on antenna 1. Switching to antenna 2, I could just barely hear him at S1. This is great isolation. So the real question is how many S units lower
Thanks Carl....I appreciate the input. I am seeing about the same difference that you are. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.conte
Oh, there will be some degree of coupling. Maybe some 60 dB or so isolation but even then with this much isolation, one is likely to hear signals from one to the other. If you believe that one S unit
I realize its not a Ten Tec but if you are interested in a comparison, Ft-1000D signal 30 db over 9, just audible with ant 2 selected. thats more what I consider isolation. YMMV My Omni 6 with S9 si
Folks, if we are going to discuss this, lets get some data either in dBw or uV values. Otherwise, what's an S-9 signal and a S-2 signal? Frankly, with >60 dB isolation, a signal on the inactive input
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Mon, 07 Jan 2008 23:12:14 -0600
And that minuscule coupling can be eliminated when the inactive input isn't being used by covering the coax connector with a cap to shield the center pin. Otherwise DowKey makes relays that improve t
Here's a chart that shows the readings in dBm related S-Units for the Orion II: http://www.n6ie.com/Orion%20S%20meter%20descrep.htm Cheers! Ron N6IE www.N6IE.com _____________________________________
Looking at this from a different point of view.... I very often listen to two different frequencies with the Main and the Sub receivers using different antennas .... say 40SSB and 40CW. I've never he
Author: Martin Ewing AA6E <aa6e@ewing.homedns.org>
Date: Tue, 08 Jan 2008 11:32:45 -0500
It's not surprising you see coupling between Ant 1 and Ant 2 ports, at a low level. It's not quite "fair" to test levels on an unterminated antenna port. Better to connect an unused port to a 50 ohm
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Tue, 08 Jan 2008 10:56:47 -0600
Back in the days of the really good analogue TU, that "QRM" would not have interrupted copy, just modified the scope display. 73, Jerry, K0CQ _______________________________________________ TenTec ma
The antenna switch on mine leaks quite a bit. It is not good enough to be of any real value in a "serious" station. I have had to resort (return) to an external switch, especially between the TX ante
That's how my Orion 1 works - S9 on Ant1 can just be heard with no S-meter movement with Ant 2 selected. 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac5aa.com --Original Message-- From: tentec-bo
Great data. Thanks. Now to the ANT 1 vs. ANT 2 coupling, anything greater than 40 dB is of no significant value. As they say, this is a "no problem" issue. 73 Bob K4TAX ______________________________