[App_rpt-users] Portable micro-node?

[Peter Elke]

Not that tough, three or four resisters and a speaker-mic cable for COS
and rx audio.  PTT is a ground to TX.

 

From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Alan Adamson
Sent: Monday, June 18, 2012 12:09 PM
To: 'Stephen - K1LNX'; app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Portable micro-node?

 

My problem with all of this is the issues with Motorola (and other
commercial radios as well) hookup.

 

The speaker isn't a speaker and ground it's a floating set of two wires
and they bias it with voltage, and the PTT and Mic interconnection
aren't that obvious either, as you may need to put resistors and caps in
line to filter and cause the radio to see the correct voltage so that
the PTT enables.

 

On the GP300's, I don't think you need that adapter as they have a 2
jack location already provided.

 

I think what I'm going to try, just because I have one and all the parts
is my TH-F6A, you can put it in 9600 baud packet mode and get to the
discriminator and mod input directly, and it has COR (but alas, it's
just connected to the meter, not really to a valid COR on CTCSS)... but
I also have a TS-32 laying around so I may make something really small.
The radio is way over kill, but hey I have it and it's straight forward
to connect up.

 

Alan

 

From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Stephen - K1LNX
Sent: Monday, June 18, 2012 12:01 PM
To: app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Portable micro-node?

 

I've thought about using the same radio, I have an MT2000 and an MTS2000
both VHF that would be perfect for a project like this... I also found
these on ebay, might be easier for wiring:  

 

http://www.ebay.com/itm/KAWAMALL-Audio-Adapter-Motorola-Radio-HT-1000-MT
S-2000-XTS-2500-Headset-Port-/380445305999?pt=LH_DefaultDomain_0&hash=it
em58944eac8f#ht_3174wt_1139 

 

I don't have a RTCM yet, but plan to get one in the near future. 

 

Stephen 

K1LNX

 

________________________________

From: app_rpt-users-bounces at ohnosec.org
[app_rpt-users-bounces at ohnosec.org] on behalf of Peter Elke
[pete.elke at esquared.com]
Sent: Monday, June 18, 2012 1:26 AM
To: Alan Adamson; app_rpt-users at ohnosec.org
Subject: Re: [App_rpt-users] Portable micro-node?

Hi Alan,

 

For UHF I have used Motorola HT1000, MT/MTS2000, and Astro Sabers with
the RTCM (and Beagle/Lox), both work well other than that you have to
use the speaker's bias for COS detect.  You just need to destroy a
speaker/mic cable for the cause.

 

Pete/wi6h

 

From: app_rpt-users-bounces at ohnosec.org
[mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Alan Adamson
Sent: Sunday, June 17, 2012 1:18 PM
To: app_rpt-users at ohnosec.org
Subject: [App_rpt-users] Portable micro-node?

 

Ok, so I want to build a portable micro-node for allstar around an RTCM.
I have the RTCM know how to configure it, etc... What I just can't
figure out is *what radio* to use.... I'd like this to be portable and
low power - ala HT.

I've got any number of commercial motorola HT's or a few dual band Ham
HT's (specifically thinking the TH-79A that I have laying around).... So
what are you all using and what's easy to hook up?  I really don't want
another *mobile* radio, that's just too much overkill.

If you would, can you offer hookup directions (not to the RTCM, I know
that part), but to whatever radio you are using?

Thanks in advance,

Alan

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