Ross,
Thanks for bringing some reality back into the discussion. The simple fact
is that the locations of the worst case spurs don't really matter. Those
frequencies are rarely if ever used. Also, most spurs are well below the
atmospheric noise floor on HF so you don't hear them in normal
At 06:49 AM 12/13/2005, Gerald Youngblood wrote:
Ross,
Thanks for bringing some reality back into the discussion. The simple fact
is that the locations of the worst case spurs don't really matter. Those
frequencies are rarely if ever used. Also, most spurs are well below the
atmospheric
Gerald, I like the radio and I very much enjoyed meeting you at Pacificon (I
was talking with you when the fire broke out on Sunday), but your remarks
(and those of others) and their implication that those who are concerned
about the spurs really ought not be (and the perceived denigration
Hi Jim
It is with speech: my ham friends say they hear me with S9+20 on 80m/LSB and
when listening to USB they hear my signal at abt S8. When I try to adjust the
image rejection with transmit rejct in the DSP setup, I get abt 40db of
rejection of the single tone.
73, Chris HB9AJP
Jim Lux
At 10:43 AM 12/13/2005, Christoph - HB9AJP wrote:
Hi Jim
It is with speech: my ham friends say they hear me with S9+20 on 80m/LSB
and when listening to USB they hear my signal at abt S8.
Is what they hear inverted (i.e. LSB)?
Is it spectrally correct, or are there holes (for instance, if you
Jim is absolutely correct. The RX and TX image rejection is completely
separate (hence the need for separate controls in the software).
Adjusting the RX side should not affect the TX side and vice versa.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
radio.biz]
About a month or so ago (after receiving my radio) I ran some Tx tests in
which I nulled the Transmit sideband image on the various bands and noted
the resultant Phase and Gain settings (using both a 3586B selective
level-meter and an 8568B spect. analyzer).
I don't have the numbers, but I recall
At 11:46 AM 12/13/2005, Jeff Anderson wrote:
About a month or so ago (after receiving my radio) I ran some Tx tests in
which I nulled the Transmit sideband image on the various bands and noted
the resultant Phase and Gain settings (using both a 3586B selective
level-meter and an 8568B spect.
This sounds like the same problem I had in the past when the orange and gray
cables were reversed (gremlins...I swear it!). When I set them correctly,
the problem went away.
Greg
AB7R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Eric Wachsmann -
Guy's
I haven't found a nicer receiver than the one in
the Flex. I have been wanting to use it with a couple of other transmitters and
haven't found a way to mute the receiver during the transmit period. I guess
anything that would lift the audio would work but it would not be a very
Hi Jim,
It was nulling a single tone. But I just went back out into the lab and
swept a tone thru the passband - the image (when I detune the xmit phase and
gain enough to see it) stays at a constant level.
Not sure how stable the settings are. They've changed from the notes I'd
made a month
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