31.25 MHz

Scanning radio frequencies in the West Midlands
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31.25 MHz

Post by Minus1 » 19 Jun 2013, 07:52

Very unusual frequency hit this morning.

31.25 MHz ~210.7

Two stations heard, obviously operating in close proximity (could have been a repeater output).
Military sounding, english accents, one callsign was 'S20B', mention of a car park

No idea of location.
In this frequency band it could be dx from anywhere in Europe, but I haven't found anything else coming in.
There did seem to be some gradual fading, but it soon came back strong.
KEY : = channel/stud | ~ = CTCSS/DCS | ^ = transmitter site | ¯ = overhead | * = trunked

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Re: 31.25 MHz

Post by Repeaters » 30 Jul 2013, 13:57

Snapshot of the UKFAT:
30·01 – 37·5 MHz
UK2, 11, 29, 31, 167, EU1
UK29 The band 26 225-26 9325 kHz and the
frequencies 31·725 MHz, 31·750 MHz and
31·775 MHz (all within ± 12∙5 kHz) may be
used by Business Radio.
UK31 The allocation is mainly for military use, any
civil requirements being co-ordinated with the
UK167 31.0375-40.1125 MHz Ofcom for analogue
cordless phones.
EU1 Commission Decisions 2006/771/EC,
2008/432/EC, 2009/381/EC, 2010/368/EU and
2011/829/EU (harmonised use of spectrum for
short range devices (SRDs)) applies.

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Re: 31.25 MHz

Post by JohnUK » 30 Jul 2013, 19:49

I think its military for sure that you were hearing and they do use that band, also 20B is a common British army callsign
The basic unit of organisation for CWs in the British Army is the platoon. This consists of 24 combat walkers, organised into three 6 CW sections (call-signs 21, 22 and 23), and a 6 CW headquarters element (20). The Section is sub-divided into three pairs, (known as Charlie, Delta and Echo) the lead pair is usually commanded by a sergeant, the second by a corporal and the last by a lance corporal. The remainder of the sections personnel are private soldiers (call-signs C1, D1, E1 etc.).

The headquarters section is similarly organised into three pairs. The platoon commander is a senior NCO, usually one with plenty of CW experience if possible. In some battalions an officer may command the platoon, but this is quite unusual. The CWWO (Combat Walker Warrant Officer, (see-whoa)) is normally a WO2, and addressed as Sergeant-Major, and takes the call sign 20 A. His second in command is another experienced NCO, normally a colour-sergeant (c/s 20 B). The last NCO in the headquarters element is a signals specialist, normally a corporal (c/s 20 C), who pilots a Bowman C. The other soldiers in the section are normally private soldiers and take call-signs after their commander (20 A1 etc.)

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