Thread: Goverment Review of UHF 477 MHz channel arrangements

so basically our existing UHF transcievers will be outdated? wonderfull!

lol, I only just changed form 27mhz about 6 months ago.

Having glanced over that link that was posted I have come to the conclusion I have no understanding of what effect it will have as I have no idea what any of it means.

Xav

When they say "interleaved" does that mean that a regular UHF set will be able to continue operating as normal on the current 40 channels, and that during the phase in of the new frequencies, that the current UHF will only be able to access alternate channels on the new 80 channel sets?

It means

.Gov has found a new way to screw you and extract money

Roll on the next ice age...

Tony

From what I have read on another Forum (OuterLimits) I am led to believe that the channel spacing may change from 25 to 12 thingies. This means that there may be 80 channels available within the current spectrum. Existing sets will still work. Those of us with programable radios will be able to reprgram them with the new spacing and channels.

Ian

Yes the situation is that with technology improvements a 12.5 Khz channel is more than sufficient for voice and basic data transmission. The current 477 MHz UHF CBRS systems use 25 KHz channels (due to older transmission techniques). THey acknowledge that the 40 channels (with a number of them not allowed for voice traffic) are not enough, and therefore a transition to 80 channels is being proposed.

This is a good thing in the long run. The problem comes witht eh need to "grand father" the existing arrangements for a period of time prior to removing the 25 kHz channels. I understand the reasoning, and the interleaved arrangements to be honest is in my tech opinion the better way to do it, the concern is the duration that the grandfathering will be over. These are typically between 3 and 5 years based on Aus Regulator history.

There are two things needed, considering the end result will be a better range of channels:

Clubs and larger bodies need to respond regarding the density of use and typical lifespan of one of these radios, including the little 0.5 W handheld that the kids play with out bush letting us know they have not fallen down a wombat hole.... Pressure regarding a longer grandfathering period needs to be placed so that we are not buying new radios in 3 years....

Re the Technical issues, do not stress, this is an issue for the manufacturers in general.

I will log on again later on.

It is all about awareness and the right to respond.

Cheers

G

BTW the Outerlimits thread was also posted by myself, and I will be contacting the 4wdNSW&ACT crew hopefully today.

If they're going to get us to buy new sets with 12.5KHz channel spacing, they may as well go to digital modulation while they're at it.
Digital allows a lot more features to be incorporated and with technology these days, the sets probably won't cost any more.

Originally Posted by waynep

If they're going to get us to buy new sets with 12.5KHz channel spacing, they may as well go to digital modulation while they're at it.
Digital allows a lot more features to be incorporated and with technology these days, the sets probably won't cost any more.

x 2