[NHRC-user] Re: NHRC 10 Audio Question...

[Jeff Otterson]

Hi,
   There is not particularly good documention for later CI-V additions.  I 
think there may be some new CI-V commands that can turn on the pre-amp or 
noise blanker, but I don't know what they are, and probably cannot test 
them without some different radios.  We are using a IC-706 MK II and a 
IC-706 MK II G for testing.  If you can come up with the commands I might 
be able to do something...  But again, it is hard for me to test...

Jeff



At 08:15 PM 8/11/2003, you wrote:
>Hi Jeff, thanks for the quick reply...
> > Hi,
> >     Are you injecting the transmit audio through the 14-pin DIN jack on 
> the
> >  back of the radio?  There should be plenty of audio for that jack.
>
>      No and Yes, the 746 has a 8-pin and 9-pin DIN on the back.
>Both must be used to make all the connections the NHRC-10 needs.
>
>Audio into the 746 is PIN-4 of ACC(1) 8-PIN DIN. The modulator input.
>It is 10K Ohms and needs 100mV rms.
> >
> >     It is possible to make some component changes on the controller board
>to
> >  increase the gain, but I'm not sure that is the solution.
> >
> >     Would you please measure the peak to peak audio level on the
>transmitter
> >  audio input of the IC-746 and let us know what you have.
> >
>    I need to drag the scope home sometime this week and look at what I've
>    got going. I will let you know.
>
>    On another subject.....
>                                     Any CIV control available for turning
>on/off the NOISE REDUCTION  or NOISE BLANKER or  PRE-AMP OR operating
>  the built in TUNER  or changing filters in the 746?
>
>I know I can't have it all but thought I would ask, hi hi.
>
>Actually been having a lot of fun, made my first contact on 40 meters
>last night. The audio report was "Very Nice Audio but a little lite."
>  With the local mic on the 746 I can see 80 Watt voice peaks, with
>the NHRC-10 only about 10.
>
>The RB/Link transmit audio buss is wide open. On the other hand I needed
>to pad the Repeater Transmitter audio input with a 10K in series to match
>the audio. (10K at the repeater TX audio in) The NHRC-10 repeater transmit
>level control is almost dead center.
>
>I'm finding that the 10 is very easy to use as a RB controller, particularly
>in the tune mode.
>
>One feature that I'm used to and will need to add is adding an extra PL
>decoder as the final enabling item in the remote transmit path while using
>HF.
>When you are in RB transmit mode you are at risk of someone coming
>on the repeater not knowing the remote TX is ON and saying HI to me and
>going out over HF. How it has been done here and on other remotes in
>the Cleveland area is using 2 PL decks with different tones. One tone
>is the normal PL for the repeater, the other also lets you in the repeater
>and after the remote TX is enabled affords the final step in pitting the
>remote TX. This keeps the OOPS factor down. Only persons authorized
>to use the HF link have the proper tone.  This also permits a quick
>local conversation using PL one then back to the remote TX on PL two.
>
>Thanks for your help.
>
>Jim - W8DRZ
>
>
>
>
>
>
>
>
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