This is from the Minnesota Air Medical Council, I'd assume this may be consistent across many states besides the midwest -
When Landing at a scene where there may be a possibility of more than one helicopter (other EMS, news, or State Patrol) monitor the air to air helicopter frequency of 123.025, and announce your position.
New media helicopters in the twin cities area and also the State Patrol helicopters monitor 122.75. Contact these helicopters on this frequency if theya re in your vicinity.
SD, ND, WI statewide Air to Air Helicopter 123.025
123.025 as has been mentioned here already is a national calling channel for rotor (helicopter) aircraft. In the Los Angeles metro area, and I'm sure other metro areas are similar, helicopter pilots follow freeway routes and will call on 123.025 when approaching a freeway interchange. 123.025 is also used to establish communication on scene but is not indented to be used as a "chat channel".
For more information you can check the pilot shop at your local airport for a rotor aircraft map.
Yea, here in Dallas/Fort Worth the traffic watch airplane guys use it WAY too much, especially when they are on the west side. Some times you get so irritated by their non-sense you want to key the mic and say: "Shut-up!" Especially when you're trying to fly and watch Judge Judy, or do a live at the five!!!
letarotor is very right !
After we leave Toronto airspace we often ( we as in a co pilot and myself ) will tune to that freq, just for laughs as we hear other pilots who work for xyz airline complain about there already high wages or females they know along the route from Toronto to Vancover ( thier route not ours ) , it can be very comical at times ,letarotor is correct ...its blah blah..I can speak for myself , ive tuned in when were at cruise on our long flights in the Cessna Caravan ( Paul my co pilot is is tuned out..not awke , but not asleep ) Ill switch that freq to my headset only fer a chuckle or 2 to fend off the boredom of a long flight in North Canada.