Monday, July 30, 2007

Interesting German 27 MHz Allocations

Tom, DL8AAM, posted a message to UDXF, containing, among other things, this allocation of the 11 meter band for Germany. The 11-meter situation is similar in a lot of countries, and it's a good demonstration of the pressures on all utility radio spectrum above maybe 25 MHz. Note the international vs local (more detailed) spectrum uses, plus the many overlapping subbands and shared ranges:

26175-27500
Mobile (Maritime)

26175-27500
Mobile (Military)

26175-27500
Fixed (Data)

26560-27410
CB-type channels spaced 10 kHz, except on 26995 and 27145,
which are not authorized. FM authorized on all channels. AM and SSB
also authorized 26965-27405. Digital modes on 26565, 26675,
26685, 29915, 26925, 27025, 27035, 27235, and 27245 kHz.
Internet gateways on 26665, 26765, 27085, and 27215.

26957-27283
Data and tone signals for remote control, can share with other
services, power limited to 10 mW ERP.

26957-27283
Educational demonstrations of RF pheonmena and circuitry for
class uses by schools and universities, 5 watts or under.

26995-27145
Radio controlled models, 10-kHz channels, 100 mW or under.

26995-27195
Local area voice communications and "switching," 50 mW or under.

27090-27100
Train control data by public railways, max +42 dB ref. 1 uA/m at 10m.

27195
Radio controlled models, 100 mW or under.

27255
Radio controlled models, 100 mW or under.

27500-28000
Mobile (Military)

27510
Local area voice or data paging inside compounds, building
complexes, etc, 5 W ERP or under.

27525-27565
Voice commands by motorcycle driving instructors to students
alone on the bike, 10-kHz channels.

27575, 27585, 27595
Voice commands, simplex answers allowed, 50 mW or under.