what is CSQ

[tbharper]

can someone tell me what type CSQ is. this from wilson county tennessee data base
Frequency Input Type Tone CH Description Mode
151.13750 BM 156.7 PL V-Tac 1 Nationwide VHF-Tac 1 FM
154.26500 BM CSQ FMA 1 Fire Mutual Aid 1 FM
154.27250 BM CSQ FMA 2 Fire Mutual Aid 2 FM
154.28000 BM CSQ FMA 3 Fire Mutual Aid 3 FM
154.28750 BM CSQ FMA 4 Fire Mutual Aid 4 FM
154.29500 BM CSQ FMA 5 Fire Mutual Aid 5 FM
154.30250 BM CSQ FMA 6 Fire Mutual Aid 6 FM
154.45250 BM 156.7 PL V-Tac 2 Nationwide VHF-Tac 2 FM
155.29500 BM 155 DPL EMS Stage VHF EMS Mutual Aid Staging FM
155.75250 BM 156.7 PL V-Call Nationwide VHF-Calling FM
158.73750 BM 156.7 PL V-Tac 3 Nationwide VHF-Tac 3 FM
159.47250 BM 156.7 PL V-Tac 4 Nationwide VHF-Tac 4 FM
453.21250 458.21250 BM 156.7 PL U-Call Nationwide UHF-Calling FM
453.46250 458.46250 BM 156.7 PL U-Tac 1 Nationwide UHF-Tac 1 FM
453.71250 458.71250 BM 156.7 PL U-Tac 2 Nationwide UHF-Tac 2 FM
453.86250 458.86250 BM 156.7 PL U-Tac 3 Nationwide UHF-Tac 3 FM
460.40000 465.40000 RM 127.3 PL PMA Police Mutual Aid FM
462.98750 467.98750 BM 156.7 PL EMS U-Tac EMS U-Tac FM

 

[Colin9690]

CSQ= Carrier Squelch. In other words, the frequency uses no PL/DPL tone.

 

[tbharper]

thanks