[App_rpt-users] RX Input Adjust Failed

Tue May 24 03:21:56 UTC 2016

Thanks much!

Bob
kk6ecm
73

-----Original Message-----
From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of REDBUTTON_CTRL
Sent: Monday, May 23, 2016 3:57 AM
To: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] RX Input Adjust Failed

Measuring the RX noise is done if you intend to use the computer to do 
the carrier squelch using the dsp mode with raw un squelched 
discriminator audio. It is measured with no signal into the receiver.

Since you have your radio connected with speaker audio there is a hi 
frequency roll off. The dsp function needs the hi freq. audio (> 3khz) 
to do the squelch function. With the roll off there is not enough hi 
freq. to do that.

Anyway, you have chosen to let the radio do the squelch so you do not 
need to do the RXnoise measurement.
You only need to inject a full quieting signal with 3K tone to the 
receiver and do a RXvoice measurement to set the RX level.

If you wanted to use the DSP mode to do squelch then you would connect 
the discriminator to the URI/FOB, set rxdemod =flat, and ctcssfrom=dsp.

Then you would do a rxnoise measurement with no signal. That gives the 
computer a baseline noise level for the squelch.
Then you would put a full quieting signal with a 1K tone and do a 
rxvoice measurement. That give the computer a full quieting signal to 
set the RX level and to compare the noise level with.

Then you would set the dsp squelch with a RXsquelch setting.

VA3RQ

On 5/23/2016 12:32 AM, kk6ecm wrote:
> I believe I am. So guess I don't have to worry about it eh?
>
> Thanks,
> Bob
> kk6ecm
> 73
>
> Sent from iPad
>
>
>> On May 22, 2016, at 8:43 PM, David McGough<kb4fxc at inttek.net>  wrote:
>>
>>
>> Bob,
>>
>> rxnoise is set using unsquelched, raw discriminator noise; this level
>> should always be much higher than an audio test signal.
>>
>> Perhaps you're using a full-quieting received signal for the rxnoise
>> source?
>>
>>
>> 73, David KB4FXC
>>
>>
>>> On Sun, 22 May 2016, kk6ecm wrote:
>>>
>>> Thanks! Part of the problem was my lack of understanding.
>>>
>>> OK... have everything working, but having difficulty understanding the
tune
>>> function.
>>>
>>> radio tune rxnoise
>>> tune rxnoise maxtries=12, target=23000, tolerance=2750
>>>
>>> radio tune rxvoice
>>> target=7200 tolerance=360
>>>
>>> I'm passing the rxvoice, but failing the rxnoise. The radio seems to
have a
>>> lot of noise, however the measured is a small fraction of the modulated
>>> signal. But the target for the rxnoise is 3 times the level of the
>>> rxvoice... I expected the rxnoise to be much lower than the rxvoice
levels,
>>> comparable to what I'm measuring. IaxRpt is "measuring" a lot of noise
(gree
>>> bar is showing strong. What am I missing here with respect to these
>>> measurement in the tune? What are the units? Gain? Where rxnoise would
>>> require much more gain (target?) than the rxvoice to achieve some level?
>>>
>>> Thanks,
>>>
>>> Bob,
>>> kk6ecm
>>> 73
>>>
>>> -----Original Message-----
>>> From: app_rpt-users-bounces at ohnosec.org
>>> [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of REDBUTTON_CTRL
>>> Sent: Sunday, May 22, 2016 12:32 PM
>>> To: app_rpt-users at ohnosec.org
>>> Subject: Re: [App_rpt-users] RX Input Adjust Failed
>>>
>>> What is the squelch logic coming out of your radio?
>>>
>>> If the line changes, does it go low with signal or no signal? And when
>>> it goes low does it pull to ground?
>>>
>>> The URI will not see a signal change if only voltage is supplied by the
>>> radio. The radio MUST pull the signal to ground on receive or when
>>> squelched.
>>>
>>> If the radio doesn't pull to ground then you may need to connect an NPN
>>> transistor to pull the line to ground. Then set USB radio for usbinvert.
>>>
>>> VA3RQ
>>>
>>>> On 5/22/2016 3:41 PM, kk6ecm wrote:
>>>> No change... whenever I have ctcssfrom=no, the PTT on the URIx is
active,
>>>> and app_rpt won't take DTMF commands. When I switch back to
>>>> ctcssfrom=usbinvert, all works normally, however, that configuration
does
>>>> not work with my substitute receiver.
>>>>
>>>> Thanks,
>>>> Bob
>>>> kk6ecm
>>>> 73
>>>>
>>>> -----Original Message-----
>>>> From: app_rpt-users-bounces at ohnosec.org
>>>> [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of REDBUTTON_CTRL
>>>> Sent: Sunday, May 22, 2016 11:21 AM
>>>> To: app_rpt-users at ohnosec.org
>>>> Subject: Re: [App_rpt-users] RX Input Adjust Failed
>>>>
>>>> Comment out the ctcss tones listed.
>>>> J
>>>>
>>>>> On 5/22/2016 2:35 PM, kk6ecm wrote:
>>>>> I discovered app_rpt does not like ctcssfrom=no. Why? (I'm using
DIAL).
>>>>>
>>>>> What am I missing?
>>>>>
>>>>> Thanks,
>>>>> Bob
>>>>> kk6ecm
>>>>> 73
>>>>>
>>>>> -----Original Message-----
>>>>> From: kk6ecm [mailto:kk6ecm at gmail.com]
>>>>> Sent: Sunday, May 22, 2016 10:37 AM
>>>>> To: 'app_rpt-users at ohnosec.org'
>>>>> Subject: RX Input Adjust Failed
>>>>>
>>>>> What could cause the Error: RX Input Adjust Failed?
>>>>>
>>>>> DONE tries=12, setting=1000, meas=58, sqnoise=13
>>>>> ERROR: RX INPUT ADJUST FAILED.
>>>>>
>>>>> No RF input to the radio.
>>>>>
>>>>> I'm attempting to setup a substitute receiver for testing, but am
>>>>> experiencing difficulty setting it up, and not wanting to make a
switch
>>> to
>>>>> simpleusb, thus making the minimum number of changes.
>>>>>
>>>>> The substitute receiver (Yaesu FT-1500M) is detecting CTCSS, with USB
COR
>>>>> out, and I'm using the speaker output. (see below conf file)
>>>>>
>>>>> Any thoughts?
>>>>>
>>>>> Thanks,
>>>>> Bob
>>>>> kk6ecm
>>>>> 73
>>>>>
>>>>>
>>>>> from usbradio_tune...
>>>>>
>>>>> hdwtype=0
>>>>> rxboost=1
>>>>> txboost=1
>>>>> rxctcssrelax=1
>>>>> txctcssdefault=107.2
>>>>> rxctcssfreqs=107.2
>>>>> txctcssfreqs=107.2
>>>>> ;rxctcssoverride=0
>>>>> ;carrierfrom=dsp
>>>>> carrierfrom=usb   ;dsp
>>>>> ctcssfrom=no    ;usbinvert
>>>>> rxdemod=speaker ;flat
>>>>> txprelim=no
>>>>> txlimonly=no
>>>>> txtoctype=notone
>>>>> txmixa=composite
>>>>> txmixb=no
>>>>> invertptt=0
>>>>> duplex=1
>>>>> rxondelay=0
>>>>> rxnoisefiltype=0
>>>>> eeprom=0
>>>>>
>>>>> _______________________________________________
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