They still use 45/46mHz in my area for fire, EMS, and other services but I'm not sure of the power levels. I've been out of EMS for years. Years ago in my mobile I ran 100 watts on VHF FM. In recent years I ran 50W VHF FM and 100W on HF/50mHz SSB w/o issue.Ken WA2LBI LG G6 ------ Original message------From: Jim BrownDate: Mon, May 6, 2019 14:10To: elecraft@mailman.qth.net;Cc: Subject:Re: [Elecraft] Mobile high powerOn 5/6/2019 10:12 AM, Ken Winterling wrote: > are used in services that use > transmitters such as police, fire, ambulance, taxi, etc.
Because of the wavelengths involved, RFI coupling into circuitry at HF is VERY different from VHF/UHF, which is used by these services. Also, I don't know current practice, but when I was doing installs of VHF rigs nearly 60 years ago, 25-50 watts was what we were installing. Likewise, FM is much more difficult to detect (rectify) than SSB or CW. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
