[Flexradio] MultiRX Question

2012-04-13 Thread Justin M. Mayrand 
OK, bear with me. I have researched this question, and I believe the answer is 
NO, but I thought I run it past the list anyways.

Using MultiRX, can I monitor two different frequencies on two different bands 
at the same time? So, let's say VFO A is on 7.200, can I listen to 14.280 on 
VFO B at the same time. This is RX only, not TX, of course.

Thanks for the time.

Justin
KB1TFH

On Apr 13, 2012, at 12:18 PM, Jim Jannuzzo wrote:

 
 I had a similar RF problem with a Heil headset mic.   The RF came back at me 
 through both the speakers and the headphones.  Since this was the only RFI 
 I've ever seen in my shack,  I used a good ol' Mix 31 split ferrite and wound 
 the mic cord through it several times, as was already recommended.  Since the 
 ferrite is heavy, and the mic cable is very puny, I also put the Heil mic 
 adapter cable through it for both support and additional RF suppression.  It 
 worked fine. Jim KJ2P 
 Date: Fri, 13 Apr 2012 08:25:42 -0700
 From: garyw...@gmail.com
 To: FlexRadio@flex-radio.biz
 Subject: [Flexradio] RF in earphones when transmitting
 
 To all,
 
 I would like to download some advice from this knowledgeable group.
 
 I have a Flex 3000 with an ALS 1300 amplifier, and Heil Pro Set Elite 
 headphones.   Everything works great, except on 40 meters where I get RF 
 in my headphones when I transmit at full amplifier power.
 
 I have tried changing the lengths of patch cables in the shack, and also 
 upgrading them to a thicker cable, but all to no avail.   I seem to be 
 getting out just fine, but the loud static in my ears when I am speaking 
 is distracting.
 
 Any ideas how to make this problem go away?
 
 Gary
 WG1I
 
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Re: [Flexradio] MultiRX Question

2012-04-13 Thread Ray, K9DUR 
Justin,

The answer is no.  You cannot even receive a 2nd signal within the same
band if it is too far away from the VFO frequency.

The receiver data stream from the A/D converter contains a range of
frequencies centered on the VFO frequency.  The width of that range is
determined by the A/D sampling rate.  MultiRX can only receive a signal that
is within that range of frequencies. 

Good rule of thumb:  If you can see it in the panadapter at some zoom level,
you can receive it with MultiRX -- otherwise, not.

73, Ray, K9DUR
http://k9dur.info




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