Thanks, I should've tried clicking the attachment to begin with, I see the image now. I recall Unitrunker used to display the offset too but that feature disappeared quite some time ago.
citabria wrote: ~ Another thing that has been noticed (by cartman) is that bandplan 5 never actually gets used either. All the 420MHz channels are accessed by extending the 04 - 412.475MHz bandplan up into that frequency range. ~
If those higher LCNs are being transmitted incorrectly then the TELCO has a BIG problem! If a radio is told to use an LCN in bandplan 04 it WILL offset the Base TX frequency by -9.45MHz and transmit back to the site.
The problem is, all freqs above 420MHz are licenced on the ACMA with +5.2MHz offsets as per the Government Spectrum assignments.
That means, every radio responding to a bandplan 04 LCN allocation above 04-1205 is TRANSMITTING ON UNLICENCED FREQUENCIES!
For example, site 001-071 at Parramatta has a CC of 422.2875MHz, if you go to
the ACMA page, and then into
the assignment details for that frequency, it clearly states that the paired (Base RX) frequency is 427.4875MHz, an offset of +5.2MHz as the spectrum says it should be.
*IF* the CC data stream is actually mislabeling this frequency as LCN 04-1570 (instead of 05-0366) then the radio must be calculating the offset based on bandplan 04, and must be transmitting it's response on 412.8375 instead of 427.4875
412.8375MHz is NOT LICENCED at that ACMA site, therefore the NSW TELCO is forcing user radios to transmit on unlicenced frequencies!
This would be a major screw up, it also means the wrong receive freqs would have to have been programmed into the repeaters themselves, and the combiners/diplexers tuned to the wrong frequencies? I just can't see them making such a huge mistake?
Or if the hardware was setup correctly and just the LCNs entered wrongly, then the site would never see any use as it would never hear affiliation requests?
Andrew