[arm-allstar] simpleusb flash tone nominal level

[David McGough]

Patrick,

A comment about the 20DB boost setting, which is actually an attenuator, 
not an amplifier.  When you turn the boost setting "on," the attenuator is 
removed and bypassed.

I'm not sure what setting will yield the very best signal to 
noise/distortion, in your usage case.

I also have no idea what the optimal signal levels should be for an 
HRI-200 interface. I would expect to find that info in its manual or a 
support forum for that hardware.

73, David KB4FXC

On Fri, 10 Jul 2020, "Patrick Perdue via ARM-allstar" wrote:

> Everything was far too quiet at 500 for rx and tx. The flash test tone 
was only hitting the meter at around -22Db. So, I turned on a 20DB boost 
on the HRI-200, which decreased the signal to noise ratio but gave a 
better reading. I then turned that 20DB boost off and compensated by 
putting the TX level from Simpleusb at 894. Yes, precisely 894, which is 
what gives me exactly -6DB with the test tone on the HRI-200's input. I 
just want to know what that tone's nominal value is without any sort of 
attenuation or boost, so I know what to look for on the other side.

I'm trying to avoid using things like simpleusb RX Boost and the 
HRI-200's 20DB gain for sake of keeping the noise floor as low as 
possible while providing as much amplitude as is feasible in both 
directions.

And, to be fair, a noise floor of -55DB vs. -66DB doesn't really matter 
so much when you're listening on an analog radio, but this goes out to 
several other modes as well. This is part of a multi-mode system 
involving, at this point, 7 different modes. Optimizing audio quality 
between all modes has been a challenge, but an interesting one.

On 7/10/2020 11:43 AM, "kg5rdf via ARM-allstar" wrote:
> Patrick,I would go with defaults in simpleusbtune. Rx and Tx levels set to 500. In wires-x under audio adjustments test tone should be set to 6 green bars on output Tx. Using the loopback you want 8 to 9 green bars on input.If you can not adjust properly, you may need to readjust Rx and Tx in simpleusbtune.David KG5RDF
> -------- Original message --------From: Patrick Perdue via ARM-allstar <arm-allstar at hamvoip.org> Date: 7/10/20  9:39 AM  (GMT-06:00) To: kg5rdf via ARM-allstar <arm-allstar at hamvoip.org> Cc: Patrick Perdue <borrisinabox at gmail.com> Subject: Re: [arm-allstar] simpleusb flash tone nominal level Hi:The HRI-200 is connected to a regular ol' URI. Thus, as far as HamVoIP is concerned, the HRI-200 is a radio. As far as the HRI-200 is concerned, the URI is a radio. So, HamVoIP talks to the HRI-200, which gets me to the wires x network through the wires x software.I didn't design the cable that goes between the URI and the HRI-200.As the HRI-200 shows up as an audio device on the Windows machine, I just opened up a DAW, selected the HRI-200's input and got readings from the peak meter as it was sent the test tone.In short, the URI is just a substitution for an analog radio or repeater as far as the HRI-200 goes. There is no actual RF involved.On 7/10/2020 10:26 AM, "kg5rdf via ARM-all
 star" wrote:> Patrick,Can you explain what the HRI-200 rf interface is connected to (URI?) and if it is connected to the server in Japan. That would help me better understand the configuration.Thanks David KG5RDF> -------- Original message --------From: Patrick Perdue via ARM-allstar <arm-allstar at hamvoip.org> Date: 7/10/20Â  3:04 AMÂ  (GMT-06:00) To: Don Backstrom - AA7AU via ARM-allstar <arm-allstar at hamvoip.org> Cc: Patrick Perdue <borrisinabox at gmail.com> Subject: [arm-allstar] simpleusb flash tone nominal level Hi:I'm setting up a HamVoIP node using a Yaesu HRI-200 connected to a URI-X. I have no other Yaesu equipment, so I can't monitor what comes out of my Allstar node into the HRI-200.I can, however, read meters on the host machine.Currently, I have everything calibrated such that the test tone hits the input of the HRI-200 at just a little above -6DB. I know that tone is pretty hot, but I don't know what value I should aim for to get as close to a 1:1 ratio as possible
 , perhaps with a little headroom. Should I be using something closer to -6, or 0 as a reference?Thanks and 73deKE4DYI_______________________________________________ARM-allstar mailing listARM-allstar at hamvoip.orghttp://lists .hamvoip.org/cgi-bin/mailman/listinfo/arm-allstarVisit the BBB and RPi2/3/4 web page - http://hamvoip.org> _______________________________________________>> ARM-allstar mailing list> ARM-allstar at hamvoip.org> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar>> Visit the BBB and RPi2/3/4 web page - http://hamvoip.org_______________________________________________ARM-allstar mailing listARM-allstar at hamvoip.orghttp://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstarVisit the BBB and RPi2/3/4 web page - http://hamvoip.org
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