Sorry for another change, the location has changed from the Old Houston Fire House on the Parks to the New Houston Fire House on 990 Kenlar Drive off the Parks Hwy North, Left on Hawk Lane and Left on Kenlar Drive . Time is still 1000-1200 Saturday. Contact John/AL7LA for any additional info. Click on map to expand,
20 June, we completed our Quarterly Alaska Comex, from 0900-1400. We received, sent and originated msg traffic by Winlink and VHF/FM voice. Bushmaster Operations cleared all traffic. Had 17 hams check into the Phone net 5 on HF & 17 on the local repeaters & 2 on DMR. The exercise was support of the borough and forestry fire suppression teams. All traffic was handled on Winlink RMS and P2P, using VARA, Pactor, Packet, & using the Eagle Packet Network (145.01) down to Homer and places in between. The RMS stations were KL7EDK, KL7GRM, WL7CVG-10 & KL7JFT-10 on various frequencies. We generated Health & Welfare, County Status & Windshield reports & Sitreps. We had request for equipment, rescue, both animal and human. We used ICS213s, text msgs. Our long haul was P2P to AG6SV/Ken the Saturn Communications Coordinator. The DMR network used the AK TG 3102 thru our local repeaters. We had hams from Tok, Big Delta, Northpole, Fairbanks, Anchorage, Sterling, Eagle River and throughout the Matsu Valley. A big thank you to all the hams who participated. Start studying and practicing for next Quarter.
OK what is DMR Radio.
Digital mobile radio (DMR) is a limited open digital mobile radio standard defined in the European Telecommunications Standards Institute (ETSI) Standard TS 102 361 parts 1–4 and used in commercial products around the world. DMR, along with P25 phase II and NXDN are the main competitor technologies in achieving 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 vocoder. DMR and P25 II both use two-slot TDMA in a 12.5 kHz channel, while NXDN uses discrete 6.25 kHz channels using frequency division and TETRA uses a four-slot TDMA in a 25 kHz channel.
DMR was designed with three tiers. DMR tiers I and II (conventional) were first published in 2005, and DMR III (Trunked version) was published in 2012, with manufacturers producing products within a few years of each publication.
The primary goal of the standard is to specify a digital system with low complexity, low cost and interoperability across brands, so radio communications purchasers are not locked into a proprietary solution. In practice, given the current limited scope of the DMR standard, many vendors have introduced proprietary features that make their product offerings non-interoperable with other brands.
The ham versions of the Anytone, TYT,Retevis, BTECH, Ailunce, Yaesu and Alinco and a few other brands are Tier I and II. And both Analog and Digital. The ALMR radios that the state is using and some municipalities are Tier III.
Some of the radio are Type 90 approved and work for ham also. Prices vary 100-300 dollars. There are some mobile version out there as well that go for 300-600 dollars.
My brand is the Anytone from Bridgecom. This training and support they provide is top notch and no question goes unanswered. They have several videos out on U-Tube and they have training courses at Bridgecom to take you thru the radios, programing and use.
Building your first code plug is a little daunting but their videos and support sites get you thru it, plus you can get with a buddy and share.
We currently have 4 Repeaters operational in Alaska, South Anchorage, Homer, Fairbanks and Wasilla. We organize or various groups of contacts into groups called Talkgroups and have one for Alaska, but there are several that include the lower 48 and the world.
These radios can be used on RF or thru internet/WiFi and cell phone hotspot connections. We are experimenting in the Valley using them simplex and repeater coverage areas to see how they compare to standard Analog simplex and repeaters.
This is just the beginning. Folks who are interested and/or are working this mode, lets put out heads together and see if we can getting going.
We have mentioned the basics requirements at our meetings and news letters for folks interested in Emergency Communications.
It was brought to my attention that it makes sense to complete them in the following order, not numerical order…..
“The recommendation is that folks begin with ISC 700 then 800 then 100 then 200 and finally 144.”
Please let me know if any of you want a classroom setting so I can schedule that with our trainer
Please send a copy of our completion certificate to Don Bush/KL7JFT MATSU DEC, to put in your training file.