EYRG.net

East Yorkshire Repeater Group, a radio amateur group dedicated to providing repeater services including training to the East Yorkshire Region.

Jul
18
Currently you will be getting a much weaker signal from GB3HS. As of yesterday evening we a using a temporary antenna which is just a X-300 colinear at 10m AGL. This is part of a number of diagnostic tests we have been doing to find the cause of a mixing problem that interferes with the receiver of GB3HS. Prior to that we were using a Band III dipole cut for 195MHz at the top of the mast some 100 feet AGL that didn’t show the problem but again didn’t produce a good coverage.

The antenna we should be using is a pair of stacked dipoles that are good for 140 to 175MHz. We swapped that onto a PMR system that was using the Band III dipole. However when connected a weak signal appears 3.5kHz away from the input frequency only when the transmitter is keyed; this doesn’t happen when the antenna is replaced with a good 50R load so the problem is in the antenna system somewhere.

The difficulty we have is the that the tubular mast is mounted on the ridge of a large barn that’s about 40 feet up and its 100 feet wide so access to the aerials is very difficult. The site owner is a national PMR company and it doesn’t generate enough revenue from the site to warrant the investment in a new mast and aerials on their own so the repeater group is trying to raise some of the cost of getting a crane on-site for a day which looks to be in the region of £2000. I should say at this point that the PMR company has been very generous in allowing us full access, free of rent and electricity charges. They have even supplied 4 of the 6 cavities we use on the duplexer.

The mixing problem may be related to the broadcast tower that’s about 400m away. Back in the late 90’s the repeater was on the opposite side of the same farm and there was a consistent problem caused by a mix where the third harmonic of Viking Radio on 96.9MHz running 30kW when mixed with our output frequency produced the input frequency. Written as an equation it looks like this: (96.9 x 3)-145.65=145.05MHz. We don’t...
Apr
24
Due to a major problem with the software the repeater cannot connect to the Internet. Consequently there is no access to any of the reflectors.

Several attempts have been made to fix it remotely including a complete power off restart to no avail. I might have one more go at fixing it remotely but it's beginning to look as though a wipe of the SSD and a rebuild will be needed. If so, HU will be down for a few days until time permits a visit to collect the server from the site.
Clive
Apr
14
Hi Clive just to let you know gb3hs is down went on last night and nothing just wounded if the group was doing any work on it at the moment.
Dec
09
DMR+ is no more over here. There are no UK repeaters connected to it anymore at all, they have all switched to Brandmeister. If you're still connected to DMR+ on 4400 you will find it very quiet apparently.

Anyone that connects to 4400, 4401, 4402, and 4403 should use the new Brandmeister DV4mini software, and choose the appropriate BM master server. The software is available in the files section above or at https://goo.gl/9tG1W4

The new BM dashboard is at http://www.bm-dmr.uk/dashboard/

Please share this post and tell other DV4mini users of the change, to prevent disappointed user wondering where everyone has gone.
May
30
This thread describes how to setup your PC to decode both D-Star and DMR Digital Voice using a low cost RTL SDR dongle and some software which I have attached. This method also works with the more expensive Funcube Dongle (FCD) which I have, or with the I/Q IF output available from the USB of an Icom IC-7100 transceiver which I don't have!

SDR Sharp
The process starts with downloading SDR Sharp and setting it up with the RTL Dongle. These are available from eBay for approximately £10 from China, and as they usually have an oddball MCX Connector, an adapter may be useful if you want to connect this to your outdoor antenna.

To install SDR Sharp, copy the files from the ZIP into a folder i.e. C:\Amateur Radio\ and then click install.exe and it will create a folder called sdrsharp for you and download all the files it needs.

[​IMG]

Select the appropriate source on the left hand menu and then click the play button - you should then be able to use your RTL SDR dongle to listen to FM broadcasts, air band and of course amateur radio transmissions by typing in the frequency.

If you tune to a D-Star (or DMR) Signal then all you will hear is the same digital noise that you would hear if you used a conventional FM receiver, as this is yet to be decoded.

Virtual Audio Cable
The next stage is to get the received digital signal into a decoding software. This is done by means of a shareware program that allows the audio output of the receiver to be...
May
10
A few weeks ago I posted a message about the D-STAR to DMR gateway that lives on DCS005V (D522 from DTMF) translating between D-STAR and GB7RR in Derby. I don't have any experience of DMR so it's quite interesting to hear people describing the system with its various talkgroups.

There is some more interesting news with NW Digital Radio describing a simple modification using a Raspberry Pi attached to the Accessory Socket of the Yaesu DR-1x Fusion Repeater that lets it work as an FM / C4FM and D-Star repeater!

See http://nwdigitalradio.com/introducing-the-udrc

73 de Andy
Mar
08
Following the installation of GB7RRthe FIRST UK Hytera Repeater on the DMRplus Hytera network last week, saw another FIRST on 25th Feb in the UK with the addition of a DMR / D-Star Bridge between the GB7RR Repeater and the UK DCS005 Reflector Module V now DMR & D-Star users can communicate with each other the Bridge in both directions i.e. DMR To D-Star & D-Star To DMR, Number translation takes place within the Bridge, for further information on the Hytera DMRplus network including how you could link your Motorola Repeater to this developing network you can contact the Repeater Team at gb7rr@gb7rr.co.uk
Feb
05
The Yaesu System Fusion DR-1XE repeater kindly sponsored by LAMCO of Barnsley was installed on Sunday 1st February by Clive G3GJA and Lyndon M0LDR. Until the change of NoV is received allowing digital output the repeater will only transmit analogue FM.

The repeater's firmware does not provide a Tx hang with a 'K' after access so you must leave a gap between overs to allow other stations to call in. Apparently the ETCC has asked Yaesu for a firmware change to suit UK conditions.

The repeater now has CTCSS on transmit, so tone squelch can be enabled on your receivers. The frequency is the same as that needed to access, 88.5Hz.

The higher power of the Yaesu equipment allows us to utilize the full 12.5dBw ERP allowed by the NoV for the first time. Losses in the duplexer, combiner, isolator and feeder losses have previously restricted the power to less than half of that allowed. The receiver also appears to be more sensitive, needing only 0.5mW into my colinear at home to open the repeater.

The picture below shows the combiner and isolators at the top, 4 duplexer cavities below and further down the Yaesu box. Below that is the switched mode power supply and the UPS.

WP_20150201_001.jpg

The Yaesu repeater is powered from 13.8v so a low noise switched mode power supply was installed. A 750VA battery powered uninterruptable mains supply was also installed to provide some resilience for the rather flaky rural mains supply. The battery should run the repeater in Rx mode for 55mins and 18mins continuous Tx.

73 Clive
Feb
05
As you may have noticed, the EYRG website has just undergone a bit of a change.

It sees us move onto updated software that's faster and a newer design that should be able to help you get where you are going a lot easier.

There are two new big changes, one of which is the new 'Resources' section, and the other is being able to pay your subs entirely digitally.

Resources
This new section is designed to help you get to useful information quicker. The resources section allow us to categorise papers, news and other things a little better than before.

In terms of sharing and distributing radio configuration files, this couldn't be any easier with new version management options and more. The resources section at the moment are mostly public, allowing anyone to publish and post their own resources, while you can make use of it now I may pull resources and fiddle with things until it is secure for what we need.

Additionally it allows the committee to keep you informed, minutes from meetings that have been made public can be published along with any research or learning material we have produced can be accessed freely with this new system.

Digital Subs
This is something I've wanted to get working since the introduction of the new website, but never had any easy way of doing it. Thanks to the upgraded site software, we can now take digital subs, which go directly to our account.

The system records you, uses your website provided details as contact info, and is even capable of repeat billing. As a little gimmick/incentive your account will instantly update with a shiny 'Subscriber' badge under your name.

This system has also enabled us to offer a cheaper £5 option that covers 6 months for those who don't want to fork out the full £10 for audio a year.

You can subscribe any time at the following link: http://eyrg.net/account/upgrades

We do still accept postal subscriptions if you wish, please note the address...
Jan
28
EYRG takes delivery of Yaesu Fusion DR-1XE repeater

Today, 27th January 2015 the East Yorkshire Repeater Group took delivery of a Yaesu Fusion DR-1XE repeater kindly sponsored by LAM Communications of Barnsley. This will be used to upgrade GB3HS on 145.65MHz with an improved analogue and a new digital Fusion service for the coverage area which covers East Yorkshire, North Lincolnshire and large chunks of West Yorkshire and North Yorkshire. The recent change of site and antennas for GB3HS now allows a 5w handheld to be used in the centre of Hull and in Grimsby.



Left to right: Richard G4YTV (EYRG Committee), Clive G3GJA (EYRG Chairman) accept the repeater from Lee M0LAM (Lam Communications)

Please remember that subscriptions for 2015 are now due; £10 or including ATV £15. Please note the new address for the Treasurer: Lyndon Reynolds, 49 Westborough Way, Hull HU4 7SW.


73 for the from the EYRG Committee.