p25, trbo, or dstar. what to do..?

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p25, trbo, or dstar. what to do..?

Postby kd8eyf » Wed Jun 15, 2011 1:48 am

im thinking about buying one of the following.....

vhf P25 to talk to handful of people on a non-linked local high profile machine with very good coverage

Dstar mobile/ht to talk to a few more people locally on a Internet connected d-star repeater with ok coverage

a trbo uhf repeater, set it up on my roof of my house

my guesstimates
p25 saber 200-300+$
XTS $500-1000+
astro spectra 200+
dstar $500+
xpr8300 $1500-$2000 + with accessories

astro saber option - i already have a system saber III, so the only thing i would need to deal with is the software.
i don't have any xts/spectra anything so theres the added noobiness to take into account with the right cables, head, speaker, software, etc... The local p25 repeater is very tall but i hardly heard any activity on it.

i read that dstar drops out worse than others, and i dont care much for the look of the icom radios, not tough enough, but its the only dual band option, which is convenient. the dstar machine has a smaller footprint, but is more active, and has the benefit of linking to other repeaters.

the repeater is kinda expensive but if i hold off and save $$ its would be doable. trbo DMR is really taking off in the :ham: band, and i wanna be a part of it. i can only get the antenna up 40 feet. so coverage would suck, but its easy to link one of the many trbo networks all over the USA. i already have a xpr6550 HT for work and scanning.

what to do.. what to do..
thoughts?

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Re: p25, trbo, or dstar. what to do..?

Postby ka8ypy » Wed Jun 15, 2011 10:54 am

XTL Mobile - $600 - $1500
APX Portables $2400 +
APX Mobiles - not on the used market yet

Both of the APXs are dual band

If you aren't going to use all of the "bells and whistles" of D-Star, then it's just another over price piece of amateur gear. When in digital mode you can't monitor the channel on analog like you can for P25 (not sure about TRBO).
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Re: p25, trbo, or dstar. what to do..?

Postby motorola_otaku » Wed Jun 15, 2011 11:29 am

P25 Astro Sabers go for sub-$125 on Batboard most of the time. When SCFR was blowing out model 2 ex-DOE VHF radios I got 2 for that price. Be patient and watch the usual venues and you can get on P25 very affordably.

My big beef with D-STAR is not the protocol itself, but the fact that the mobiles cost a kilobuck yet still have the same shitty intermod-prone barn-door receiver front ends as every other Japanese ham radio. If it were ever possible to buy a D-STAR aftermarket module and install it in a commercial radio I would look into it then, but until then.. nothx.

I guess I would ask if you just wanted to talk and play digital, or were you interested in learning the art of repeater construction while playing digital? Don't get me wrong, there is no shame at all in throwing up a backyard repeater - I did it for years and it is a great educational experience to prepare you for the time when you gain real site access. But if you want it to work at all you have to be willing to spend the $$$ on good hardware. LMR400, a J-pole, and a duplexer some :ham: "tuned" with a wattmeter won't cut it. At the scant minimum you need 1/2'' Heliax feed line (Ultraflex is perfectly acceptable and easier to work with than regular 1/2''), a good commercial fiberglass antenna from Andrew Decibel, PCTEL Maxrad, Comprod, Antenex, or one of those guys (and a Decibel folded dipole array if at all possible - they beat fiberglass antennas in full-duplex repeater applications every time), and a duplexer that has been properly tuned on a return loss analyzer or a spectrum analyzer/tracking generator. Those items will aid greatly in squeezing every last square inch of coverage out of your system, but you'll have to be patient with the hamfest offerings in your area if you don't want to end up spending another half-kilobuck or more in addition to the cost of the repeater itself.
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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Wed Jun 15, 2011 2:22 pm

thanks for the pointers, im gonna start repeater buildin..

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Re: p25, trbo, or dstar. what to do..?

Postby mancow » Fri Jun 17, 2011 8:03 pm

Don't let the look of the Icom D Star IC92AD fool you. I would say it's more rugged than an XTS5K-R due to its smaller size and weight but equally dense construction. The thing is just a solid little brick and the battery seems to last forever. The RF performance is excellent and is every bit as sensitive as any XTS. The only thing I dislike is the audio output power is a bit weak, especially when operating in D STAR mode.

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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Fri Oct 28, 2011 2:08 pm

well a quick update
i got one of the sabers from SCFR cheap. out P25 machine works really good here in Detroit. 2 bad theres only 3 people on it
The i got a nice new uhf trbo repeater w/ Decibel folded dipole / celwave duplexer ( wife is gonna kill me )
Thing is the repeater coordinator for my state says hes having trouble getting a coordinated freq . Waiting for 2 months. I really don't wanna have to keep retuning this duplexer since i have to pay someone to do .
So what do i do? just pick a random repeater freq thats listed not in use in the area, listen for a while? if not hear anything tune the duplexer and setup the repeater and hope nobody complains? The things only 50 some feet up so its not like its gonna be getting out long distances.

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Re: p25, trbo, or dstar. what to do..?

Postby burner50 » Fri Oct 28, 2011 7:27 pm

NXDN


Mixed mode repeater ftw

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Re: p25, trbo, or dstar. what to do..?

Postby Josh » Fri Oct 28, 2011 10:28 pm


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Re: p25, trbo, or dstar. what to do..?

Postby motorola_otaku » Sun Oct 30, 2011 4:23 pm

And the sign says you got to have a membership card to get inside.

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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Sun Oct 30, 2011 5:09 pm

they know what there doing. NBFM / P25 simultaneous

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Re: p25, trbo, or dstar. what to do..?

Postby mr.syntrx » Mon Oct 31, 2011 12:53 am

Support the Warfighter

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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Sat Nov 26, 2011 9:09 am

Yo yo so i be chillin in the crib with my trbo and all my hoomies trippin cuz i be talkin all hamsexy and shit to my bros in new zeland sounding like they be down the street, yeah i think dis almost as good as echolink
:baby:
my antenna is a db402 and i feel could use a upgrade. the going rate for the eight bay db420? I seen used for 500+ shipping. Seems a bit high for a used antenna? And reccommendation on vendors that sell new

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Re: p25, trbo, or dstar. what to do..?

Postby motorola_otaku » Sat Nov 26, 2011 7:44 pm

Tessco is pretty much your best/only source for new. Any of the Ebay sellers will :anus: you on shipping to make up for the sale price markdown.

I get all of my Decibel antennas from hamfests. I walked away from the last one with two DB413s and a DB420 for $200.
And the sign says you got to have a membership card to get inside.

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Re: p25, trbo, or dstar. what to do..?

Postby WTF » Sun Nov 27, 2011 2:38 am

Q: What is red and orange and looks good on a politician?
A: FIRE!!

"Yea we eat grits in South Carolina, so what? You fools here eat that Skyline Chili junk. I'll keep the grits..."

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Re: p25, trbo, or dstar. what to do..?

Postby motorola_otaku » Sun Nov 27, 2011 4:30 am

And the sign says you got to have a membership card to get inside.

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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Thu Feb 02, 2012 11:29 am


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Re: p25, trbo, or dstar. what to do..?

Postby motorola_otaku » Thu Feb 02, 2012 2:31 pm

Fuckin' A man, right on. Does my heart good to see someone put the effort and expenditure into doing it right.

When you start getting around to other sites and see some of the crap the :vestman: crowd tries to run it'll make you sick.
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Re: p25, trbo, or dstar. what to do..?

Postby Josh » Thu Feb 02, 2012 9:48 pm

I live in Auburn Hills... what is your repeater set up for?

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Re: p25, trbo, or dstar. what to do..?

Postby escomm » Sun Feb 05, 2012 3:21 pm

Seems that repeater may have a higher insured replacement value than the entire city of Detroit

:baby:
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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Mon Feb 06, 2012 12:46 pm

Its DMR , 443.950+ CC 1 S1 DMR-MARC / S2 Michgan Repeaters only

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Re: p25, trbo, or dstar. what to do..?

Postby Josh » Thu Feb 09, 2012 1:49 am


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Re: p25, trbo, or dstar. what to do..?

Postby kd8eyf » Fri Feb 10, 2012 9:40 am



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