[App_rpt-users] AllStar Node / repeater radios

Skyler F electricity440 at gmail.com
Thu Sep 24 10:16:57 EDT 2015

Is it possible to use a URIx for freestar yet or do you still need a
hardware board for the digital stuff? I know they were working on something
for software.

On Thu, Sep 24, 2015 at 8:15 AM, Steve Zingman <szingman at msgstor.com> wrote:

> Digital needs unfiltered receiver and transmitter audio. I've done it with
> D-STAR and DMR. I have only setup a SM-50 as a user radio.
> Steve
> On 9/24/2015 10:05 AM, Skyler F wrote:
> Well my personal experience with a baofeng node is really good audio
> reports, and sometimes better than my motorola SM-50 discriminator audio. I
> just use the internal tone decoder in those baofeng radios for COR.
> Would they not be suitable for DSTAR though?
> On Thu, Sep 24, 2015 at 7:41 AM, Steve Zingman <szingman at msgstor.com>
> wrote:
>> On 9/24/2015 9:30 AM, Skyler Fennell wrote:
>>> Can I have an explanation of why discriminator is needed for anything
>>> but actual digital modulation like 9600 baud?
>>> To prevent PL tones?
>>> Nope, when plugging in good headsets I can hear the CTCSS tone from the
>>> repeater and even on the baofeng.
>>> Lack of high frequency noise?
>>> Put a high pass filter
>>> Someone please explain why discrim is needed. Good audio is good audio
>>> and can't it be manipulated to fit the needs of the application?
>>> Maybe I don't want other filters inline, I want total control of the
>> receive audio. de-emphases CTCSS filtering etc.
>> If worried about audio levels, put an AlC which automatically feeds the
>>> system (weather Allstar or free star) with the perfect level independent of
>>> the level of the user.
>>> Please note I'm only talking analog.
>>> 73
>>> Skyler KD0WHB
>>> On Sep 24, 2015, at 7:15 AM, Steve Zingman < <szingman at msgstor.com>
>>>> szingman at msgstor.com> wrote:
>>>> Being a DSP based radio, the BF888 is a cheap low power analog only RF
>>>> package. Given the lack of discriminator and modulator access it is limited.
>>>> For a receiver the Maxtrac  / Radius / GM300 work well. For a
>>>> transmitter not so much. Heat output and with the Maxtrac, problems with
>>>> power and deviation control out of band can cause problems without custom
>>>> firmware or hardware hacks.
>>>> My absolute favorite RF gear for Analog / Digital repeaters is Tait.
>>>> The T800 series is a purpose built programmable Exciter / Receiver package.
>>>> With access to all the signals anyone would want. I started using them for
>>>> 927 MHz repeaters and have had great performance on UHF and VHF. Mix and
>>>> match at will. Pair a VHF receiver with a UHF or 900 MHz transmitter for a
>>>> nice RF linked receiver site. For link radios simplex nodes and "Hot Spots"
>>>> I've come to favor the Tait T2000 mobiles. They are easy to program, well
>>>> documented, lots of IO and run cool in transmit.
>>>> The above is not to say there are not a LOT of great repeater / node
>>>> packages out there. The GE MASTR II comes to mind. I have to mention the
>>>> Micor to keep the flack down. ;) I've built repeaters using everything from
>>>> a Motorola 30D to current equipment.
>>>> Your mileage may vary.
>>>> 73, Steve N4IRS
>>>> --
>>>>          ,,,
>>>>         (o o)
>>>> -----ooO-(_)-Ooo------
>>>> --- N4IRS was Here ---
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> --
> Skyler Fennell
> amsatnet.info
> <electricity440 at gmail.com>electricity440 at gmail.com

Skyler Fennell
electricity440 at gmail.com
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