http://forums.radioreference.com/ Discussions related to GMRS (General Mobile Radio Service) en Sun, 22 Nov 2009 06:09:48 GMT vBulletin 60 http://forums.radioreference.com/images/misc/rss.jpg http://forums.radioreference.com/ http://forums.radioreference.com/gmrs/164615-gmrs-national-emergency-channel.html Mon, 16 Nov 2009 14:41:29 GMT Hi,

Just got my FCC GMRS license, a pair of Vertex 824 UHF's, and a programming cable and had a general question regarding the GMRS emergency channel.

I understand the receive and transmit frequencies will be 462.675 and 467.675 respectively, but will I need to program the coded squelch to 141.3 for BOTH the encoding and decoding?

With so many available channels on my radio, would it also be useful to configure a channel for simplex operation (462.675/462.675)? I guess my question really is if ALL emergency comms are ALWAYS on repeater operation?

Many thanks for your assistance, and any helpful tips on programming and configuring these radios would be appreciated.

Dave. ]]> GMRS flyfishdave http://forums.radioreference.com/gmrs/164615-gmrs-national-emergency-channel.html http://forums.radioreference.com/gmrs/164424-trisquare-900mhz-radios.html Sat, 14 Nov 2009 00:13:23 GMT I don't know where to put this since there is no area for this radios so I thought GMRS was the closest.

I just bought a pair of this radios because of the privacy I can get and for the 1 watt of power, I have read that they work very good on line of sight, but not to good between buildings etc.

My plan is to mod them, I just removed the stock spring antenna and added a SMA connector so I can add better 900mhz antennas.

Right now I'm using a small antenna from my cellphone jammer (I know I know they are illegal, that's why I'm using parts from the jammer for this project, like the SMA connectors) Jammer is dead :).

I will be testing them in different areas, the Nihm batteries that came with it are a joke 4.8v 750mAh, I will be using a higher capacity battery in some of the test to see if I can push more than 1 watt, I have no way to measure it but transmitting distance should improve if I'm right.

Text message is nice to have.

Here is a video my scanner trying to scan the trisquare frequency, NO LUCK. at one moment it stopped for maybe 2 seconds but when I transmitted I couldn't hear my voice.

YouTube - Trisquare Radios, and my Scanner

Some pics







Here is the radio with my scanner antenna a little big but it's for testing only.

]]> GMRS cdesigns http://forums.radioreference.com/gmrs/164424-trisquare-900mhz-radios.html http://forums.radioreference.com/gmrs/164239-new-gmrs-user.html Wed, 11 Nov 2009 23:47:38 GMT Hey, Y'all! I'm new to the forum, and also a new GMRS user. Wanted to know if anyone is familiar with commonly used GMRS frequencies in the Jackson, MS area so I can check out how my new radio performs; range, etc. If anyone can be of assistance, I'd appreciate it very much! Thanks! ; ) ]]> GMRS MrScanMan047 http://forums.radioreference.com/gmrs/164239-new-gmrs-user.html http://forums.radioreference.com/gmrs/163752-uniden-fined-breaking-us-encryption-laws.html Thu, 05 Nov 2009 23:13:51 GMT $23,000 for selling scrambled GMRS transcievers. http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-09-2374A1.pdf $23,000 for selling scrambled GMRS transcievers.
http://hraunfoss.fcc.gov/edocs_publi...-09-2374A1.pdf ]]> GMRS ac7xc http://forums.radioreference.com/gmrs/163752-uniden-fined-breaking-us-encryption-laws.html http://forums.radioreference.com/gmrs/163644-fcc-gmrs-database-question.html Wed, 04 Nov 2009 18:11:02 GMT It seems that the FCC database routinely skips numbers. Sometimes it skips a number or two, but from Oct. 31 to Nov. 3, it skipped approximately 300 numbers. What's up with that? ]]> GMRS gman4661 http://forums.radioreference.com/gmrs/163644-fcc-gmrs-database-question.html http://forums.radioreference.com/gmrs/163155-uhf-range-question.html Thu, 29 Oct 2009 12:40:10 GMT What is the approximate range between simplex UFH mobiles (25-40 watts) using quarterwave antennas. What about high gain antennas? Also, same question, but with a handheld and a mobile? What is the approximate range between simplex UFH mobiles (25-40 watts) using quarterwave antennas. What about high gain antennas?

Also, same question, but with a handheld and a mobile? ]]> GMRS gman4661 http://forums.radioreference.com/gmrs/163155-uhf-range-question.html http://forums.radioreference.com/gmrs/162786-midland-gxt740vp3.html Sun, 25 Oct 2009 01:38:04 GMT I was surfing the internet tonight and I saw that this midland lists the usual 22 GMRS/FRS channels "...PLUS 20 EXTRA CHANNELS..." Does anybody have any idea what the "extra 20 channels" are? Did they add some UHF itinerant channels?

Midland Radio - Midland Radio | Communication Solutions For Your World


GMRS/FRS FREQUENCY CHART (MHz)
CH. No CH. Freq. CH. No CH. Freq. CH. No CH. Freq.
1 462.5625
9 467.5875
17 462.6000
2 462.5875
10 467.6125
18 462.6250
3 462.6125
11 467.6375
19 462.6500
4 462.6375
12 467.6625
20 462.6750
5 462.6625
13 467.6875
21 462.7000
6 462.6875
14 467.7125
22 462.7250
7 462.7125
15 462.5500
8 467.5625
16 462.5750
23
24
25
26
29
30
31
32
33
34
27
28
35
36
37
38
39
40
41
42

The chart in their online owner's manual is blank for those frequencies.


I did more searching and I found the answer in a wiki. Hmm, "extra channels" huh?

http://wiki.radioreference.com/index..._channel_chart

Midland has started marketing "Extra Channels" on several of their radios. These extra channels are simply existing FRS/GMRS frequencies with hard coded tones. (See Below)
MIDLAND CH FREQ FRS/GMRS CH TONE MIDLAND TONE NUMBER
23 462.5625 1 250.3 38
24 462.6125 3 225.7 35
25 462.6625 5 203.5 32
26 462.7125 7 179.9 29
27 462.5500 15 162.2 26
28 462.6000 17 146.2 23
29 462.6500 19 131.8 20
30 462.7000 21 118.9 17
31 462.5875 2 23 DCS 1
32 466.6375 4 31 DCS 4
33 462.6875 6 47 DCS 7
34 467.5625 8 65 DCS 10
35 467.6125 10 73 DCS 13
36 467.6625 12 115 DCS 16
37 467.7125 14 131 DCS 19
38 462.5750 16 143 DCS 22
39 462.6250 18 156 DCS 25
40 462.6750 20 172 DCS 28
41 462.7250 22 223 DCS 31
42 462.5625 1 107.2 14 ]]> GMRS JASII http://forums.radioreference.com/gmrs/162786-midland-gxt740vp3.html