Trying to work the 10-meter contest that just ended from my high-noise QTH, I found a very narrow heterodyne on my Orion II, just one sideband from 28,027,618 to 28,027,627 Hz. (With my step set norm
Well, I guess what I'm asking is if this is internal to the Orion II; do other O2 owners find this narrow signal? (It's still here this snowy Maryland morning...) -- John, K3GHH _____________________
Disconnect the antenna from your 02, is it still there? Fred Well, I guess what I'm asking is if this is internal to the Orion II; do other O2 owners find this narrow signal? (It's still here this sn
I could not hear it now on my Orion 2 with or without the antenna. However I am sure I have previously heard it on or about the frequency you mentioned. Tom AG8K _____________________________________
Still there, Fred; no change in strength. (I should have thought to do that myself...) -- John, K3GHH _______________________________________________ TenTec mailing list TenTec@contesting.com http://
What do you mean by "very narrow heterodyne?" Is it a single CW carrier? Why do you say it is very narrow? Is is so super pure that you can tell it has less noise around the center carrier than typi
I meant to say "identical model receiver." DE N6KB _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
Ken, on UCW the CW note (tuning up the band) is first heard as a high-pitched tone at 28,027,618 Hz, falling in pitch until it disappears at ...627 Hz (not audible at 628). On LCW, tunig up the band
Since it does not go away when you disconnect the antenna, adding attenuation to the antenna port is not going to tell us anything. The signal is something generated within the receiver. It is eithe
Thanks, Ken... no change when other things turned off. I'm going to not pursue this thread further; if anyone becomes curious about it later, or duplicates the issue, he or she can revive it. I appre
Having this type of problem of my own more than once in the past, I first isolated the problem by disconnecting the antenna. When the carrier did not disappear, I disconnected everything connected to
Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Date: Sat, 19 Dec 2009 19:14:33 -0600
What you are seeing is NOT a very narrow CW signal, you are seeing a signal tuned by a very high harmonic of the receiver LO. If it was an analogue receiver sweeping past the 500 HZ IF filter while t
Thanks, Jerry... your comments are consistent with what I had suspected, though I lack the technical knowledge to explain it as you have. It's so narrow, and on a band I don't frequent anyway, that i