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PostPosted: Wed Jan 22, 2014 17:13 pm 
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Real Name: Scott
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If you had a greyhound m8 with working radios which other radios could communicate with it?

Would a jeep radio work?

Any help would be appreciated!

Scott

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PostPosted: Wed Jan 22, 2014 17:41 pm 
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Be careful mate as you need a licence for the frequencys you use and many are protected frequencys and you haven't said what radio it is, until you do we can only guess.
I suggest before you do anything you read the legalities on the OFCOM site http://licensing.ofcom.org.uk/

The main legislation is the Wireless Telegraphy Act 2006 (the ‘2006’ Act’). This empowers Ofcom to:

issue and charge for licences for the installation and use of radio;
make and enforce regulations on the requirements to be met by users;
make and enforce regulations on the requirements to be met by manufacturers and importers of radio apparatus and of equipment which could cause radio interference; and
restrict manufacture, sale, import and possession of specified radio apparatus.
The 2006 Act also contains a number of criminal offences prosecuted by Ofcom. Some offences relating to unauthorised use of radio can attract fines of up to £5000 and/or two years’ imprisonment.

Section 8 of the 2006 Act forbids the installation or use of wireless telegraphy equipment (radio) in the UK mainland, including Northern Ireland and territorial waters, the Isle of Man and the Channel Islands, unless an appropriate licence has been obtained from Ofcom, or there are Regulations in force exempting it from the licensing requirements.

Licences are usually granted subject to terms, provisions and limitations, which must be complied with. These may include:

use only on a certain frequency;
use only with a certain power and certain level of emission;
use must not cause undue interference;
use only within a certain geographical area;
use only of apparatus which meets specified requirements; and
access for inspection by Ofcom staff and close down in the event of interference being caused.

And that's just a small part of it, you cannot just install and use a radio on whatever frequency you want in this country and if you are caught OFCOM has the right to not only confiscate the radio equipment but also any vehicle it is illegally installed in.

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PostPosted: Wed Jan 22, 2014 18:35 pm 
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Don't worry. Already considered this.

Scott

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PostPosted: Thu Jan 23, 2014 0:36 am 
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Licensing can be a pain and expensive.
Normally you don't get a 'blanket' license. One that covers all. You get a license for certain frequencies in certain locations on certain days.
Basically in our hobby every event would need a new license for each item of equipment.
Before you get there though you might have to pass a few tests to ensure you have the required standard of operating skills?
That is assuming the set in an M8 can be tuned to UK legal frequencies?
I would talk to Ofcom before you get those tubes glowing.

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PostPosted: Thu Jan 23, 2014 5:24 am 
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As I understand it you have SCR 300 walkie talkies theses work on a frequency range continuously variable from 40.0 to 48.0 megacycles providing 48 channels of communications.

The bad news is that no publicly, legally available licence is available for these frequencies so far as I am aware and within that frequency range users are MOD tactical communicationsincluding ground to air (helicopters) and training camp frequencies. Secondly there is an allocation for Radio controlled model cars, boats etc.
Other users are cordless telephones, vehicle and long range security alarms and broadcasting links for the BBC.

So as you can see the possibilities for causing interference to these users and therefore inviting a visit from OFCOM inspectors is endless (not saying it will happen just that it can).

What im saying is forget using these radios illegally because they could bring you more trouble than you can handle including the possibility of confiscation of any vehicle to which an illegally installed and used radio is fitted (again not saying this will happen just that OFCOM have the power to do this if needs be). The fines for illegal use can be up to £5ooo and or a custodial sentence being careful not to bend over to pick up the soap to often.

You can ignore this of course and operate illegally just don't get caught.

I will post some advice on legal ways to get some comms for the group when I get back from work.

Dave

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PostPosted: Thu Jan 23, 2014 6:49 am 
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dcdl12976 wrote:
As I understand it you have SCR 300 walkie talkies theses work on a frequency range continuously variable from 40.0 to 48.0 megacycles providing 48 channels of communications.

The bad news is that no publicly, legally available licence is available for these frequencies so far as I am aware and within that frequency range users are MOD tactical communicationsincluding ground to air (helicopters) and training camp frequencies. Secondly there is an allocation for Radio controlled model cars, boats etc.
Other users are cordless telephones, vehicle and long range security alarms and broadcasting links for the BBC.

So as you can see the possibilities for causing interference to these users and therefore inviting a visit from OFCOM inspectors is endless (not saying it will happen just that it can).

What im saying is forget using these radios illegally because they could bring you more trouble than you can handle including the possibility of confiscation of any vehicle to which an illegally installed and used radio is fitted (again not saying this will happen just that OFCOM have the power to do this if needs be). The fines for illegal use can be up to £5ooo and or a custodial sentence being careful not to bend over to pick up the soap to often.

You can ignore this of course and operate illegally just don't get caught.

I will post some advice on legal ways to get some comms for the group when I get back from work.

Dave


Thank you mate.

Scott

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PostPosted: Thu Jan 23, 2014 9:24 am 
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Now to ask the correct question, what, if any infantry radios could communicate with a M8, a half track or a M36 for that matter.
Same question regarding a jeep?

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PostPosted: Thu Jan 23, 2014 10:06 am 
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M8s would have had SCR 506 radios in if it was a standard M8...HQ M8s had both SCR 506 and SCR 508s fitted as standard the additional radio being fitted in the sponson where the shell racks were.

regards

Lloyd

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PostPosted: Thu Jan 23, 2014 10:57 am 
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SCR-506 tx between 2 and 4.5 Mhz and rx 2-6 Mhz?
SCR-300 tx and rx 40-48 Mhz
So, no overlap at all. Scr-506 and Scr-300 cannot talk to one another. You would need to use a relay station? Someone with one of each sets to 'translate' what was sent on one frequency to another frequency.
Hertz and cycles are the same thing, just look up the operating frequencies for the radio unit you want to use and compare the numbers. If the transmission freq or one correlates with the receiver of another they should be compatible.
Scr-508 worked 20 - 27.9Mhz so no joy there either.

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PostPosted: Thu Jan 23, 2014 11:06 am 
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The 508 is FM and the 506 is AM, the 506 being the earlier model.


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PostPosted: Thu Jan 23, 2014 11:14 am 
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The M36 Jackson had the SCR-610 set which worked 27-38.9Mhz.
The numbers seem close to the lower end of the Scr-300 range but might as well be 20 miles away.
I missed the AM/FM difference, incompatible systems.

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PostPosted: Thu Jan 23, 2014 18:56 pm 
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Cheers guys!

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