UBC XLT125 new 8.33 frequencies

[rozbiff]

Here are all the changes in an easy to understand chart showing Old 25kHz Frequency, New Channel Name and Actual Frequency (From 2019)
://ukradiotransmissions.wordpress.com/blah

What is the point of listing the whole lot in a chart when the system can be shown with only a few?

Rubbish like this is supposed to help people? It's no wonder you are all confused

For example, the frequency of 118.150 with the new 8.33 bandplan is now
known as 118.155 and this is the actual frequency the air traffic
controller will say to go to on the radio. The fact is however, that
the new frequency name for 118.150 is just a name, 118.155, however
the actual frequency is still 118.150. Many people seeing the new
118.155 channel name naturally assume that 118.155 is the new 8.33
frequency however it is not, it is simply the new channel name for
118.150 MHz which is still the correct frequency to put into your
scanner.

Oh yes, an excuse to include some tacky images......

[JohnUK]

Oh yes, an excuse to include some tacky images......

I like the tacky images

[Mark5R]

Oh yes, an excuse to include some tacky images......

I like the tacky images

[mhm]

How to identify 8.33 frqs

25 kHz frequencies end with: 00, 25, 50 or 75.
An 8.33 kHz channel will have a 6 digit channel ending: 05, 10, 15, 30, 35, 40, 55, 60, 65, 80, 85 or 90.

[Mark5R]

How to identify 8.33 frqs

25 kHz frequencies end with: 00, 25, 50 or 75.
An 8.33 kHz channel will have a 6 digit channel ending: 05, 10, 15, 30, 35, 40, 55, 60, 65, 80, 85 or 90.

That is still not correct as it causes confusion.

25 kHz frequencies end with: 00, 25, 50 or 75

Yes fair enough.

An 8.33 kHz channel will have a 6 digit channel ending: 05, 10, 15, 30, 35, 40, 55, 60, 65, 80, 85 or 90.

The frequency does not have that ending, only the channel name does. So you have tied 2 different things together in one explanation.

25 kHz frequencies end with: 00, 25, 50 or 75.

Yes, the frequencies do but the channel name doesn't. Saying what a 25kHz "frequency" ends with and then what a 8.33 kHz "channel " ends with is explaining two different things.

It should be said that...
25 kHz frequencies end with: 00, 25, 50 or 75
8.33 kHz frequencies end with: 0083, 0166, 0333, 0416, 0583 (and many other numbers ending with a 6 or a 3)

Or you could say that...
25 kHz channels end with: 00, 25, 50 or 75
8.33 kHz channels end with: 05, 10, 15, 30, 35, 40, 55, 60, 65, 80, 85 or 90.

I blame the people that made these changes. To be fair to Steve, it may be a long winded list with taccy images but it is the clearest explanation and conversion chart I have seen anywhere else and spells it out to a tee leaving no confusion

[Scan125]

An I'm struggling to back track the reference but I distinctly recall an official document that said the use of the term CHANNEL should no longer be used because it in itself causes confusion. And it blinking well does. By all other international radio standards a channel in a "qualified" INTEGER designation that corresponds to a frequency. So we have Marine Channels, CB Channels, PMR Channels etc. etc. There is no confusion. Marine users select the appropriate channel for their purpose. e.g. emergency, harbour master etc.

To try an mix channels and frequencies in the Air Band environment is just total confusion. The people who matter are the aircraft, traffic controllers, etc. so they just need a clear and distinct "number to dial". Not a channel, not a frequency just an agreed number. Due to legacy of aircraft kit etc. then the decimal numbering has been retained.

As with marine, PRM, CB,.... channel based communications the end parties do not give a toss as to what frequency is used. The same now goes for aircrew/controllers. They now deal in internationally agreed decimal based settings (as opposed to integer) and the frequency is irrelevant. It is only us sad people who do not have (well I do now) have compliant air band hardware who keep on discussing and arguing over frequency vs channel vs terminology vs who is rigth vs who is wrong.

Decent scanners will, like pucker certified aircraft/controller equipment will make the appropriate translation. The Uniden UBC125XLT gets most of this correct but I had to build into Scan125 Control Program a correction function to cater for some values.

If you buy, for example a Yeasu FTA-250 then this 100% compliant and when you dial 123.456 then the unit will use the correct "actual frequency". This could be today (example) 654.321MHz or in ten years time 987.654MHz.

I agree/accept that for people with non compliant kit then they need to convert from "professional user kit settings" to amateur kit frequency settings but I'm staggered and confused by all this frequency vs channels vs what do I enter vs who is coming to dinner. Sorry but this is getting very tedious for everybody (and I understand why).