Almost home on Trunking

[rredbeak]

Ive learnt so much from you guys im so greatefull. Eventho shaky ive grasp it at long last ,now its only hands on learning curve to be finally proficient.I am finally walking my way through menus/sub menus on both the 96 and the 996 without absolute fear LOL.

One last question.
How do you know what offset to put in,the choices are from 380 to around 780. Is it critical if i get it wrong?

Is there a site i can see what the offsets are along with base freqs? on RR not all are marked this way.

TY Cheers Rod

[Comint]

One last question.

I doubt it.

How do you know what offset to put in,the choices are from 380 to around 780. Is it critical if i get it wrong?

It's critical in the sense that if you get it wrong, the scanner goes off to the wrong frequency on Voice calls.

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Comint

[rredbeak]

then how do i determine what the offset and base freqs are if its not listed please ?

Cheers Rod

[Comint]

then how do i determine what the offset and base freqs are if its not listed please ?

Cheers Rod

Intuition, and a lot of hard work.

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Comint

[Phil]

Comint is right it is mostly guess work however we do try and take that guess work away from you don't get it wrong

and i also agree with comint that it probably wont be your last question as even i still ask questions, better to ask then to not get the right answer

[rredbeak]

Thats True Phil,
It was a silly thing to say but never mind. Life goes on .

I thought there might be some formula you apply to the freq to get the base freq..Cheers Rod

[Comint]

I thought there might be some formula you apply to the freq to get the base freq..Cheers Rod

There is (sort of), but you have to know the Channel Number of the Frequency.

As I have posted in these forums previously (numerous times, it seems, but the posts keep disappearing), the Trunking System Controller only broadcasts Channel Numbers, and the Mobiles know which frequency relates to the particular Channel Number.

Unfortunately, such is not the case with scanners, or Trunked Radio Decoding programs such as Trunk383, TRUNK88, or UniTrunker, etc. and basically, the Offset, in conjunction with the Base Frequency, provides this relationship.

As the Trunked Radio segment of the 800MHz Band is pretty well standardised, worldwide, most Trunk Tracking scanners come with the Offset / Base Frequency pre-set for this Band. However, operation in other Bands is not so formalised, and the Offset / Base Frequency input is a means of solving this problem.

Early scanners only allowed one set of Offset / Base Frequency, but with some Networks, such as the NSWGRN, and the VIC MMR using multiple blocks of frequencies, later scanners allowed up to three sets of Offset / Frequency entries, with recent models having provision for up to six entries.

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Comint

[rredbeak]

i use proscan,uniden software,freescan,buetel ar996 but none of them provide the base or offset.The Proscan time limit is long expired but it still fires up and runs up/down to the scanner,Very happy with it. So is Freescan,its good stuff too.

trouble is if the offset is critical and it ranges from 0 to 780 or so and the software doesnt supply or suggest its very frustrating.If the base and other freqs are CORRECT but the Offset ISNT right will i still hear anything?

I tried using trunk88 but i cant get it installed properly for some reason,Unitrunker will install but i dont like it much

I just joined brisbane scan forum and their list does give the details.

Cheers Rod

PS,you were right its far from my last question ROFLLLLLLLLLLL..