Question from a newbie

[perky416]

Hi guys,

A newbie here, my background is electronics (Aerospace) and I have recently become interested in RF. The past couple of weeks I have been trying to learn as much as as I can, I find myself googling left right and centre however there are some things I just dont get, so I thought what better way to find out than to ask.

On thing bugging me is the frequencies between the bands, I notice some export HAM radios operate on frequencies from 25.6150 to 30.1050 mhz.

So the 12 meter band is 24.89 – 24.99 mhz
The CB band is 27.60125 - 27.99125 mhz
The 10 meter band is 28 - 29.7 mhz

What about the frequencies 25.6150 to 27.60125 and 29.7 to 30.1050? What are they used for? What would you pick up if you was to tune into or transmit over those frequencies in the UK?

Many Thanks

 

[Minus1]

25-27 is in reality not a lot. Check the band plan on the OFCOM website (Spectrum Information).
29.7 upwards is officially military, but you'll likely hear nothing. You are most likely to get occasional dx in Russian when atmospheric conditions are suitable.

 

[ecps92]

or US DX from business users in that same spectrum.

25-27 is in reality not a lot. Check the band plan on the OFCOM website (Spectrum Information).
29.7 upwards is officially military, but you'll likely hear nothing. You are most likely to get occasional dx in Russian when atmospheric conditions are suitable.

 

[Minus1]

I've not yet caught anything in the UK between 29.7 and 30.1 from the US.
Lowest I've heard is EMS pagers above 33.42 - 33.98 MHz.

 

[ecps92]

there is/was a Regular poster here, or one of the many other lists, who posted his SKIP monitorings from Ireland and regularly had many of our New England Business users in the 29-34 Mhz bands

Couple (9) to listen for are at the top of this list
Business Radio Systems - Scan New England Wiki

I've not yet caught anything in the UK between 29.7 and 30.1 from the US.
Lowest I've heard is EMS pagers above 33.42 - 33.98 MHz.

 

[windymiller]

Hi guys,

A newbie here, my background is electronics (Aerospace) and I have recently become interested in RF. The past couple of weeks I have been trying to learn as much as as I can, I find myself googling left right and centre however there are some things I just dont get, so I thought what better way to find out than to ask.

On thing bugging me is the frequencies between the bands, I notice some export HAM radios operate on frequencies from 25.6150 to 30.1050 mhz.

So the 12 meter band is 24.89 – 24.99 mhz
The CB band is 27.60125 - 27.99125 mhz
The 10 meter band is 28 - 29.7 mhz

What about the frequencies 25.6150 to 27.60125 and 29.7 to 30.1050? What are they used for? What would you pick up if you was to tune into or transmit over those frequencies in the UK?

Many Thanks

For someone with an aerospace background, wavelengths are extremely outdated. We all use frequencies these days.

Hams use up to to about 25 MHz from your above list.

CEPT CB kicks in at 26.965 and goes up to 27.405

UK CB (27/81) is as you state, then hams start at 28 up.

TBH, plenty folk use the entire spectrum of frequencies you list as they choose. Some call it the "freeband"