Fewer words is always better words.
Let's say I'm approaching Sumspot, which
has runway 09/27 and the wind is out of
the west, obviously favouring rwy 27.
Suggested radio calls:
1) Cessna Alpha Bravo Charlie five north
(or south or east or west) inbound Sumspot
That's it. No altitude. No long-winded description
of how I am going to join the circuit. With left
traffic on rwy 27, if I am coming from the
west, obviously a straight-in. If I am coming
from the north, obviously overhead, etc.
2) Alpha Bravo Charlie downwind 27 sumspot
3) Alpha Bravo Charlie final 27 sumspot
4) Alpha Bravo Charlie clear 27
and that's it.
The above may seem abbreviated, but on a
sunny, busy weekend, that may be all you can
get onto the frequency which is used by several
different airports.
PS Remember that legally speaking, the CARs
are regulatory and the AIM is not. You do NOT
have to join the circuit at an uncontrolled airport
as described in the AIM. For example, if there is
paradrop or helicopter or right glider traffic, you
would be foolish to rigidly follow the AIM and risk
a mid-air collision.
All you have to do is obey CAR 602.96(3):
602.96 (3) The pilot-in-command of an aircraft operating at or in the vicinity of an aerodrome shall
(a) observe aerodrome traffic for the purpose of avoiding a collision;
(b) conform to or avoid the pattern of traffic formed by other aircraft in operation;
(c) make all turns to the left when operating within the aerodrome traffic circuit, except where right turns are specified by the Minister in the Canada Flight Supplement or where otherwise authorized by the appropriate air traffic control unit;
(d) where the aerodrome is an airport, comply with any airport operating restrictions specified by the Minister in the Canada Flight Supplement;
(e) where practicable, land and take off into the wind unless otherwise authorized by the appropriate air traffic control unit;
(f) maintain a continuous listening watch on the appropriate frequency for aerodrome control communications or, if this is not possible and an air traffic control unit is in operation at the aerodrome, keep a watch for such instructions as may be issued by visual means by the air traffic control unit; and
(g) where the aerodrome is a controlled aerodrome, obtain from the appropriate air traffic control unit, either by radio communication or by visual signal, clearance to taxi, take off from or land at the aerodrome.
Note that there is no regulatory requirement for an
aircraft to join the downwind (or even the base) at
an uncontrolled airport. The AIM is not regulatory -
rather, a collection of suggested practices which as
PIC you are allowed to - even required to - deviate
from whenever required.
Flying instrument approach procedures, for example,
both VFR and IFR, I will frequently join straight-in final
at uncontrolled airports. Perfectly legal. We've been
doing it for decades.