Danny37
Member
I want to punch in some frequencies for a ham bank I'm putting in my scanner. I understand that 446.000 is the national calling but are there any more that are commonly used for simplex communication? Particularly in the 70m band.
I want to punch in some frequencies for a ham bank I'm putting in my scanner. I understand that 446.000 is the national calling but are there any more that are commonly used for simplex communication? Particularly in the 70m band.
In certain regions, 447.000 is used.
73,
n9zas
Wait 447 is used as a national calling in some regions?
I want to punch in some frequencies for a ham bank I'm putting in my scanner. I understand that 446.000 is the national calling but are there any more that are commonly used for simplex communication? Particularly in the 70m band.
Wait 447 is used as a national calling in some regions?
446.000 is ARRL's simplex calling frequency, if that makes it "nationally recognized", OK.
But simplex can be found anywhere not occupied by a repeater or other full time service.
Each area has their own layout of how things work. Contacting a ham in your local area would be your best bet.
Here are some of the common 70cm simplex frequencies that I have in all of my radios...
445.975
446.000
446.025
446.050
446.075
Like others have mentioned, I'm sure that simplex frequencies vary by region, but these do fall within the 70cm band plan as "simplex" frequencies
I'm curious what band plan shows those as simplex frequencies. In the southwest US, those are all repeater inputs or outputs, with 446.000 being the one exception.
My concern is that dissemination of really local info in a nationwide forum might mislead people into thinking it's wide open for simplex use everywhere. It's already bad enough with new hams not being aware of local band planning.
To add to the confusion, Southern California is on 20 KHz channel spacing, not 25 KHz. This serves to illustrate just how local UHF bandplans actually are.
Have not heard traffic on 446.5 but have heard balloon-hams on 447.000 but could not get a reply from them, due to a unknown tone.
No specifics as to altitude or direction but I tried several times.
73,
n9zas