Jump to content

BuyTwoWayRadios.com

Photo

Power limits


  • Please log in to reply
6 replies to this topic

#1 jwilkers

jwilkers

    Advanced Member

  • Members
  • PipPipPip
  • 122 posts
  • LocationColumbus, Ohio
  • GMRS Callsign:WQWK521
  • Ham Callsign:KD8DVR

Posted 16 December 2015 - 06:38 PM

While reading regs, I noticed only mobiles seem to be allowed the full 50 watts. They indicate "fixed stations" have a 15 watt max. I am then assuming base stations and repeaters are fixed stations under the rules.

Thoughts?

Sent from my LG-D631 using Tapatalk

#2 zap

zap

    Advanced Member

  • Members
  • PipPipPip
  • 473 posts
  • GMRS Callsign:WQRH471
  • Ham Callsign:W5PKY

Posted 17 December 2015 - 10:44 AM

Those were left over from when fixed stations (and repeaters) had to be registered (pre-1988). There are a few legacy (businesses) operating under those licenses so the definitions remain in the rules.

Repeaters are subject to the same 50W (RF) power limits that mobiles are (notice, no defined ERP unlike the interstitial channels). 


  • jwilkers likes this

#3 jwilkers

jwilkers

    Advanced Member

  • Members
  • PipPipPip
  • 122 posts
  • LocationColumbus, Ohio
  • GMRS Callsign:WQWK521
  • Ham Callsign:KD8DVR

Posted 17 December 2015 - 06:10 PM

ok, thanks,



#4 denteles

denteles

    Newbie

  • Members
  • Pip
  • 1 posts
  • GMRS Callsign:wrcu613
  • Ham Callsign:wa7ozt

Posted 04 February 2019 - 02:32 AM

What is the max power for a base station??



#5 PastorGary

PastorGary

    Senior Tropical Weather Analyst, TSRC, Gulf Shores, Alabama

  • Banned
  • PipPipPip
  • 1471 posts

Posted 04 February 2019 - 04:18 AM

95.1767 ( a) ( 1) - "The transmitter output power of mobile, repeater and base stations must not exceed 50 Watts."

 

 

[ As measured with properly calibrated equipment at the output connector on the radio or repeater, operating on the 462/467 MAIN channels.]



#6 Ian

Ian

    Advanced Member

  • Members
  • PipPipPip
  • 104 posts
  • GMRS Callsign:WRCH569

Posted 04 February 2019 - 10:33 PM

While reading regs, I noticed only mobiles seem to be allowed the full 50 watts. They indicate "fixed stations" have a 15 watt max. I am then assuming base stations and repeaters are fixed stations under the rules.

Thoughts?

Sent from my LG-D631 using Tapatalk

Fixed stations are also assumed to be those stations that only communicate with fixed stations; base stations are like fixed stations but intended to communicate with mobile units.  It's assumed that fixed stations will be using tight-beam antennas, while base stations will be using omnidirectional antennae.  The EIRP of the fixed station, even using only 15 watts, should probably be higher than the base station using an omni at the same range, so long as the beam antenna is pointed at you.



#7 RCM

RCM

    Advanced Member

  • Members
  • PipPipPip
  • 220 posts
  • LocationNorth Alabama
  • GMRS Callsign:WRCM718
  • Ham Callsign:KU4FL

Posted 05 February 2019 - 04:32 AM

To clarify, in case anyone missed it: a "fixed station" is a specific type of station that is set up to communicate with another fixed station. The term does not apply to base stations nor repeaters.


  • Ian and WRAM373 - Richard like this




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users