That practice is still alive and well to anyone who listens to AM radio. Why don't you have to do it anymore?antfreq said:Gone are the days of voicing timestamps with callsigns every 30 or 60 minutes. I actually miss doing that.
servo_fan said:I think SPD is/was KMA907.
That practice is still alive and well to anyone who listens to AM radio. Why don't you have to do it anymore?
I have kept a database of valid frequencies for over the years. Call signs are a very important part of that data.antfreq said:SPD's 400 was under FCC Lic KMA something, I can't recall off the top of my head. Even though SPD doesn't use that radio system they still refer to themselves as such. Often just 'KMA'. It's kinda iritating since it's been years since they have used that callsign/radio system.
SSD was KMJ500, which is still licensed (like spd) but not used by the departments.
All ambulances nationwide are required to have those freqs. Most have the radios and never use them. However it is a good idea to hang on to them because in times of real disaster they are universal between ambulances (at least the ones that are compliant).mkewman said:ah yeah, i just realized they were mednet.
but it's retarded to keep all those licenses when the only time a mednet freq is used is when calstar or another chopper is calling ucdavis.
LAPD still has its original 3x3 callsign, KMA367, which was first issued in 1949 to replace "KGPL", but only a couple of VHF freqs are on it. As the old mostly 4-letter licenses came up for renewal in the late 40s they were replaced by the new ones, and California happened to get a LOT of "KMA---" callsigns. Many LAPD coppers still use the abbreviated "KMA" to ID the mobile-side freqs when they end lengthy transmissions, even though the UHF callsign has been KJC625 for almost 25 years now. Of course "KMA" with a noticeable inflection would on rare occasion be uttered by an officer who was irritated at the dispatcher, leaving no doubt that he meant "Kiss My A--".antfreq said:SPD's 400 was under FCC Lic KMA something... Even though SPD doesn't use that radio system they still refer to themselves as such. Often just 'KMA'..
Yep, that was fun. Whoever was working as our "link" operator would voice the dispatch and "hotshot" freqs callsigns every 15 minutes, and include the time at the top of each hour, almost like a litany "KMA367, KMA785, KMA786, KMA787 and KGW725." Went to an automated recorded voice when UHF moved in, and now it's done in CW: -.- .--- -.-. -.... ..--- .....antfreq said:Gone are the days of voicing timestamps with callsigns every 30 or 60 minutes. I actually miss doing that.
OK, found it. Sacramento PD's first callsign in about 1932 was KNGF on 2422 kcs (AM), with 500 watts. I would guess they kept that until "KMA907" came along in the late 40s, and they probably stayed on that frequency until the 1950s when VHF-high became popular. Some agencies went to VHF-low for a while, but I don't know about SPD.hmarnell said:Sac PD had radio cars by 1935, but I can't find their old 4x callsign.