primary

I believe all monitors here know that HF primary&secondary frequencies for an MWNRA area is different at day and night. The question is how does a radio operator decide to change frequencies?I found that (may be it's not true) there is no obvious pattern. For example, 11330 usually is the...

So, I have had the radioshack pro-164 scanner for almost a week. When I look up the city I am trying to program (Bend, Oregon) it gives a list of "primary control frequencies" and then some additional ones (that are not listed as "secondary control"). Should I program all the frequencies into...

So, I have had the radioshack pro-164 scanner for almost a week. I have finally figured out how to understand the frequencies and talkgroups. When I look up the city I am trying to program (Bend, Oregon) it gives a list of "primary control frequencies" and then some additional ones. Should I...

I have a bcd396xt scanner. I live in the los angeles california county of glendale. I recently downloaded several trunking sites from freescan san bernardino county riverside county regional fire protection i have downloaded other conventional systems with no problems. I also downloaded a...

hello everyone. i recently downloaded a trunking system from radio reference by way of freescan. once you download the system to a window it displays the word primary on the left side of this window for san bernardino ca system 9 and simulcast for several other system from san bernardino. once i...

hello everyone. i recently downloaded a trunking system from radio reference by way of freescan. once you download the system to a window it displays the word primary on the left side of this window for san bernardino ca system 9 and simulcast for several other system from san bernardino. once i...