View Single Post
  #2 (permalink)  
Old 04-16-2018, 4:26 PM
Ubbe Ubbe is offline
Join Date: Sep 2006
Location: Stockholm, Sweden
Posts: 2,152

What frequencyband to the emergency services use?

The 77 and 771 seems to be identical in performance judging from those who have tried both.
You can do a search on the top of the page for "best portable antenna" "best airband antenna" and you can see what folks opinions are. One interesting aspect when looking at Unidens portable antenna that comes with their scanners are that it seems to be doing best in the airband 118-136 compared to some other tested antennas. Measuring Relative Antenna Receive Performance - Massively Uninformed

To get an antenna that performs better in the airband would be to use a 1/4 telescope antenna at 60cm lenght. The Diamond 77 and 771 and some others are amateur dualband antennas tuned for 144MHz and are too short at 40cm.

TRX-2 BCD536 HP1 BCT15 BC246 BC346 BR330 UBC3500 Pro2006 Pro2042 Optocom OS545 Scout PCR1000 ICR2500 IC75 DX394 AR8200 IC-R2 IC-R10 UBC780 MD380 CS580 CS750 Pro96 Perseus ADCR25 AcecoSC1plus RTL-SDR
Reply With Quote