Tom,
AH... I didnt spot the very obvious!
I was listening to myself on another radio (same freq not via a repeater)
using headphones, and did not get the usual howl / feedback if its
overcooked.
I suspect the Mike I am using on the Flex is a lot more sensitive than I
first thought.
I had not considered the software delay and hence the feedback would not
howl as usual, and it would give a delay line effect.
You can see that I am very green when it comes to SDR!
Still, that's the fun of the hobby, there is always something to play with
and now that I have just retired I have dug out the CW key and got the Flex,
to play with. It's a LOT different to what I have been used to, hence I
still think "Hardware" as opposed to a mix of Hard and Software. I havent
done much QRP either, and from what I have read the Flex radio is going to
be good for this as well.
The shacks in a Mess as I am fitting a new Earth Bus Bar due to having read
that the Flex like a good earth. So I will test your suggestion later on,
and I suspect that it's the answer. I just hadnt considered it!
Much appreciated for the help. I will post up if that was the problem.
Best Regards
Geoff
G0DDX
-----Original Message-----
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Tom Bray
Sent: 26 March 2011 13:24
To: flexradio@flex-radio.biz
Subject: Re: [Flexradio] Transmit Audio Problems (It Echoes)
How are you determining you have this echo? Are you using a repeater
that will repeat back what it hears or are you listening to yourself on
another radio?
The Flex has a small amount of delay as it processes your audio. If you
listen to that on another radio it sounds like there is a delay line. If
your monitored audio gets into the microphone it will sound like you
have an echo machine on your radio.
Tom
WB8COX
On 3/26/2011 6:42 AM, G0DDX wrote:
> Hi,
> I'm new to the Flex scene and have my Flex 1500 for all of two weeks.
> The RX side is really nice, and am very pleased.
>
> However on trying FM voice, I sound like I have a reverb in line and it's
in
> full swing!
> I really won't go on the air sounding like I am in a canyon with every
word
> being repeated 3-5 times.
>
> I have a Microwave Modules 144/28 Transverter, and that is working very
well
> indeed, and I can hear the Dutch and Belgian beacons better than on my
> IC706. I even get 6W out of it on tx.
>
> Anyone got any ideas what I can change to get some sort of normal voice
> signals from the Flex 1500?
>
> I am using a PC type headset (all of £6.50 ISH) which is pretty good on
rx,
> and very clear on tx, except for the reverb, which I dont think is down
to
> the mike.
>
> PC is a i7 920 2.6Ghz with 4gb ram, and is reasonably fast. ie should be
> good enough for the job.
> The Flex is running 2.0.20 RC2.
>
> Anyone got any suggestions?
>
>
> Thanks in advance
>
> Geoff
> G0DDX
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