SALOP repeater news
& BLOG ROLl
A number of people have asked me if there is a beginners guide to DMR. I remembered that when I started out in DMR many years ago I found this eBook from John S. Burningham (a name, not an instruction!), W2XAB, that was very useful.
It's called "Amateur Radio Guide to Digital Mobile Radio (DMR)" and you can find it here.
It's US based and covers 'generic' information suitable for the DMR-MARC / Phoenix / BrandMeister networks, but it is useful and free. It has been updated a few times and serves as a great introduction.
The latest generation of 70cms digital voice repeaters with a 9MHz split have inputs at the low end of the band (around 430.9-ish). The ETCC have reminded us to highlight the power restrictions which apply to the 430 - 432 MHz sub-band.
The maximum Peak Envelope Power (PEP) in this part of the 70cm band is 40W (16dBW) Effective Radiated Power (ERP) for Full and Intermediate Licensees, and 10W (10dBW) for Foundation Licensees.
Given that many modern mobiles can run 25 to 50Watts or higher power output to high gain antennas it is very easy to exceed these levels, so please take care to keep your power to a reasonable level and certainly never above the limits of your licence.
The cluster has been up and running for a little over 12 months. Many thanks to the following people for their financial support during 2016!
We are currently testing a new link to GB7HM
Slot 2 / TG 950 on the Salop Cluster is linked to Slot 1 / TG950 on GB7HM - this allows HM to carry traffic from the Northern Cluster and Salop Cluster at the same time.
UPDATE - August 2017 - link is currently disconnected.
GB7HM on Hope Mountain is currently disconnected from the Salop cluster whilst we tinker with the IP network.
Engineering work planned for August and September will also see GB7OZ in Oswestry temporarily shut down for essential antenna maintenance before the first snows of winter set in!
Most DMR activity is centred around the 70cm repeater networks, but DMR simplex activity does exist on both 70cm & 2m, and performs very well indeed! Program the UK DV channels into your radio and add DH3 to your scan list.
DH3 438.6125 (calling channel)
Program your radio for Colour Code 1, Slot 1, Talk Group 9 (local)
Many commercial codeplugs already have the UHF DV Simplex channels configured, so give a call!
Why not give 2m a try as well, the DV calling frequency is 144.6125, same details as above.
For those with the 146-147 NoV, also try 146.9000 to 146.9875 - no official calling frequency up here, so scan all 8 channels.
Do you need any accessories for your Motorola DMR equipment? Items such as separation kits, keypad microphones, mobile brackets, power leads ... even new radios (DM4600 mobiles / DP4800 portables etc.) drop us a note here and we'll see what we can do!
We have accounts with most of the major distributors and commercial equipment suppliers, so be assured any kit we supply is genuine Motorola (with UK guarantees) and not cheap, Chinese knock-offs.
We always have a lot of good old fashioned analogue equipment; including new and used radios, Procom & Panorama antennas and other equipment knocking around. So it's always worth asking us for anything you are looking for, if we don't have it ourselves we can try and source it for you!
Any profits are ploughed back into the running of the network.
We had a minor problem with a network router this week that decided to die, leaving both OZ and HM isolated.
The router was dead, deceased …
It passed on! This router is no more! It has ceased to be! It’s expired and gone to meet it's maker!
It's a stiff! Bereft of life, it rests in peace! If we hadn't bolted it to the rack it'd be pushing up the daisies!
It’s electronic processes are now 'istory! It's off the net!
It's kicked the bucket, it's shuffled off it's mortal coil, shut down the power and joined the bleedin' choir invisibile!!
However - good news - a brand new router was installed today :-) and stability has returned to the force.
Please support the Salop Repeater Cluster!
GB7OZ came on air today at around 3:30pm. The first QSO through the repeater was between the keeper Gary, G0DNI, and Phil G4JCP in Dudley using Slot 2 / TG 950.