SRD860

Licence free two-way radio services that now includes both FM and digital channels. Discuss models, modifications and other similar worldwide standards such as FRS and GMRS.
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26mb04
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Joined: 23 Nov 2017, 20:14
Call Sign: 26MB04
Location: Democratic Peoples Republic of Devon

SRD860

Post by 26mb04 »

Has anyone had any luck with the voice-capable allocations on 860MHz? IR2030 throws up a few possibilities for analogue/digital voice, although ERP limitations could be a problem for some commercial equipment.

I think, though, with the right modifications (ERP tuning, etc.) it would be possible to have CB-style voice net whilst still complying with IR2030. I'd be interested to see if anyone has done this, maybe with US 800MHz gear etc.
Sent from my GP300 using DTMF

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Mikel
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Re: SRD860

Post by Mikel »

I seem to remember a few discussions on this site a few years back regarding this band and if I remember correctly there was a lack of readily available radios on the market to use?

The Alan 860 is a handheld that works on the relevant frequencies and the Kenwood TK-980 is a higher powered mobile unit, any others though easy to get hold of?.

A lot of the threads seem to have been lost when the site changed hosts but if you run a search for srd860 in the top right search box you cans still find some interesting stuff.

This is interesting:

869.40-869.65 MHz is 500mW, I thought it was all 10 to 25mW!

The stuff below is from OFCOM doc IR 2030:

IR2030/1/19
2010/0168/UK
Oct 2010
Non-specific short-range devices

Equipment may be used airborne

869.40-869.65 MHz

500 mW e.r.p. Channel spacing 25 kHz

Consecutive channels may be combined where a larger bandwidth is
required, due to the modulation of the signal, up to the
maximum sub-band frequency allocation.

Techniques to access spectrum and mitigate interference that provide
at least equivalent performance to the techniques described in
harmonised standards adopted under Directive 1999/5/EC must be
used. This can include for example Listen Before Talk. Alternatively
a duty cycle limit of 10 % may be used.
(page 20)

https://www.ofcom.org.uk/__data/assets/ ... r-2030.pdf
................................................................................................2W0NBF.........................................................

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