Mine does not show a true waveform of the TX AM signal.
It does not show modulation in the negative direction. it shows the carrier
on TX, and the positive modulation.
I don't need any sort of sync setup, I have a scope on the IF of the
homebrew receiver and it shows a nice waveform on transmit and receive,
without any sync.
I was told the display in the flex uses the receiver to monitor the transmit
signal.
What I would like the flex to do is to do what the scope and homebrew
receiver do, show an accurate display of the AM modulation.
Brett
----- Original Message -----
From: "Brian Lloyd" <brian-wb6...@lloyd.com>
To: "Brett Gazdzinski" <brett.gazdzin...@verizon.net>
Cc: "Tim Ellison" <telli...@itsco.com>; <flexradio@flex-radio.biz>
Sent: Sunday, February 14, 2010 11:41 AM
Subject: Re: [Flexradio] Is this computer sufficent?
On Sat, Feb 13, 2010 at 7:33 PM, Brett Gazdzinski
<brett.gazdzin...@verizon.net> wrote:
On AM, the scope is useless as it only shows the audio waveform.
Uh, I don't think that is correct.
In the shack, its handy to have an Oscope to look at the transmitted
waveform (to make sure the modulation looks good) and the received
waveform
to see what the other peoples modulation looks like.
Yes. Actually the "scope" mode does show the RF envelope and would be
useful for testing AM if the following were true:
1. there was some sort of easily-adjustable time-base with
synchronization/triggering to stabilize the display;
2. the scope actually monitored the output of the transmitter after
the PA. (Useful for any mode, not just AM.)
Item 1 above requires some software effort. Item 2 above is possible
to do if you can use the receiver (with appropriate attenuation) to
monitor the output of the transmitter.
If you really want a station monitor 'scope, I have the Kenwood
station monitor/panadaptor that goes with the TS-520 or TS-820 I will
let go. It will do what you want.
--
73 de Brian, WB6RQN/J79BPL
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