New uk wide analogue network 64.8125-66.8375MHz

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New uk wide analogue network 64.8125-66.8375MHz

Postby JohnUK » Mon Oct 23, 2017 12:32 pm

Has anyone noticed the new vhf low band "England Wide" analogue network set up by Ambitalk (Maxxwave)?

The frequencies they have are as follows (25 kHz Bandwidth)...

TX: 66.7000 MHz
RX: 67.9000 MHz

TX: 66.2250 MHz
RX: 67.4250 MHz

TX: 66.4500 MHz
RX: 67.6500 MHz

TX: 64.8375 MHz
RX: 64.8375 MHz

TX: 66.3250 MHz
RX: 67.5250 MHz

TX: 66.8375 MHz
RX: 66.8375 MHz

TX: 66.5250 MHz
RX: 67.7250 MHz

TX: 66.4000 MHz
RX: 67.6000 MHz

TX: 64.8125 MHz
RX: 64.8125 MHz

TX: 66.6250 MHz
RX: 67.8250 MHz

TX: 66.8125 MHz
RX: 66.8125 MHz

This appears to be an "England Wide" network. It also appears to be wholly analogue as they dont seem to like DMR or dPMR they say on their site...

Ambitalk is really simple to use. Just press the button and talk. Your audio will automatically be routed through our advanced network of radio masts, microwave links and switching hubs to arrive at the other end without any appreciable delay that is present on "DMR" or "dPMR" digital systems. Crystal clear, distortion free, superb coverage. It really is that simple.

http://www.ambitalk.co.uk/


I just read on another site that 66.21875MHz is The Ambitalk control channel for East Yorkshire, and that the signal quote "goes for miles". Quite interesting as thats a simplex one. I've had a quick scan about 66MHz around here and not picked anything up so far.

Has anyone else heard or picked up anything?

In any case it is nice to see low band VHF getting more PMR use :radiocall:
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby G4RMT » Mon Oct 23, 2017 1:10 pm

The wiki entry https://en.wikipedia.org/wiki/Ambitalk reveals more interesting stuff. It would seem that digital on the lower bands isn't very effective because of the strange propagation the lower bands suffer from, hence why analogue would seem to be the only mode that would be workable. Fading and delayed reflections would make digital very difficult to implement, so they've turned a negative into a positive, which is neat. It seems to be a re-invention using established technology in a very undersized band. I guess the mobile repeater option will be UHF, and again, simple too implement. The real key to the success I hope they get is the fact that low band, and this is ten meg lower than we've really been used to, is almost an unwanted band due to antenna sizes - but if they are only interested in vehicles as the primary target, then the long whips aren't that much of a problem.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby JohnUK » Mon Oct 23, 2017 1:48 pm

Thanks for that link G4RMT :thumbup:

It certainly is an interesting network and approach. And as a swl/scanner listener its quite refreshing to see a new low band vhf analogue system.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby Alfie » Mon Oct 23, 2017 7:58 pm

Not hearing anything here on a quick initial scan but will keep listening

So the split paired freqs are standard repeaters ? what about the single/simplex frequencies ?
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby Minus1 » Mon Oct 23, 2017 10:44 pm

I've had most of these in my scanner for months and heard nothing.
Not the first time that Maxxwave have had licences listed, but nothing actually showed up…
I reserve the right to ignore people who have made no attempt to the read the manual, and expect others to do it for them.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby G4RMT » Tue Oct 24, 2017 7:17 am

OFCOM have a price checker on their site to give you an idea of the price for technically assigned licences and band one, the home of this new system is the cheapest in terms of pounds per area. It's still a lot for country wide coverage but nowhere near the mega money for VHF high band, which is where wide area interest and frequency shortages seem to be.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby deadite66 » Fri Mar 15, 2019 9:15 pm

anyone ever heard anything on ambitalk?, feels like vaporware.
Airspy R2 on a Marine tuned dipole (Rocket Radio MARI-1)
24/7 Marine recording with RTLSDR_Airband
Airspy R2 on a Discone
SDRplay RSP1A on a homebrew UHF dipole
Yupiteru MVT-9000 MKII telescopic ant.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby Neil57uk » Mon Mar 18, 2019 6:22 pm

Myself and a couple of others had a listen for about a year over many counties but nothing heard. Assume no takers for a low band alalogue net.
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Re: New uk wide analogue network 64.8125-66.8375MHz

Postby deadite66 » Mon Mar 18, 2019 7:46 pm

surprised we haven't read about them folding if they had no takers.
Airspy R2 on a Marine tuned dipole (Rocket Radio MARI-1)
24/7 Marine recording with RTLSDR_Airband
Airspy R2 on a Discone
SDRplay RSP1A on a homebrew UHF dipole
Yupiteru MVT-9000 MKII telescopic ant.
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