Irish Frequency Database Launched

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Amateur / Ham Radio operators and shortwave listeners have a new online source of Irish radio frequencies.

FrequencyDB.com is an Irish radio frequency database that has received a make over and relaunched. The database contains over 1700 frequencies from the island of Ireland.

Irish Frequency Database - http://www.FrequencyDB.com/database

76 GHz Under Threat from Car Radar

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Amateur Radio and Amateur Satellite allocations in the 76 GHz band are under threat from vehicle radar systems

The FCC is seeking comment on issues involving expanded use of various radar applications in the 76-81 GHz band, which Amateur Radio shares with other services. The band 77.5-78 GHz is allocated to the Amateur and Amateur Satellite services on a primary basis, and to the Radio Astronomy and Space Research services on a secondary basis.

“We undertake this proceeding to expand the available spectrum for radar operations in the 76-81 GHz band,” the FCC said in a detailed Notice of Proposed Rulemaking and Reconsideration Order (NPRM&RO), released February 2015 in ET Docket 15-26.

The Commission said the proposals include allocation changes as well as provisions “to ensure that new and incumbent operations can share the available frequencies in the band.”

ARRL Story - http://www.arrl.org/news/fcc-seeks-comment-on-radar-sharing-schemes-that-could-displace-amateur-radio-at-76-81-ghz

D-STAR, DMR and C4FM Repeater Maps

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Radio amateurs use at least five different and incompatible amateur radio digital voice modes on the VHF/UHF bands, D-STAR, Motorola's DMR, dPMR, Yaesu System Fusion C4FM and FreeDV

FreeDV

Of those D-STAR, DMR and C4FM have widespread repeater networks and there is currently one dPMR repeater GB7RR.

Yaesu supply the DR-1XE dual band repeater which can operate in both Digital SystemFusion (C4FM) mode and the traditional Analogue FM mode. It features an Automatic Mode Selection function.

FreeDV was initially developed for HF but is now being used at VHF as well. It is a free software solution for digital voice making use of your PC's soundcard, see

Maps showing the D-STAR, DMR and C4FM repeaters are available on the UK Repeater website.

FreeDV - http://freedv.org/

D-STAR Repeater map - http://www.ukrepeater.net/d-star.htm

DMR Repeater Map - http://www.ukrepeater.net/dmr.htm

Yaesu System Fusion C4FM Repeater Map - http://www.ukrepeater.net/fusion.htm