Having Fun with RF....
Level 1 - Cooking with BIAS...
Today, we'll be using an ordinary Cobra 29 GTL/NW/ST/WX - LTD with the TA2003z Audio chip.
As you know this radio was specifically designed to accept RFX75/85/95 - and the new 150 units - with optional Steel bracket bracing for your Ford Pinto (see Technical Service Bulletin TSB#1024: Explosive Results Caused By Arcing Of Your Lips Due To Poor RF Shielding Causing Severe Burns)
Inside the Radio you'll notice that there are a lot of little parts connected to bigger parts and those bigger parts are connected to the metal case - this is where you begin your procedure...
To prevent further injury - the Author has decided to SACK the entire idea...
In regards to BIAS - in an AM radio - there is no bias control - at least one that can be set readily (See AnyTone)
But you wouldn't need to either - you just need to remember to keep stock levels of power. The specs for that near the top of the instructions.
40 Watts PEP is a little different than a 4 watt carrier - one is a dynamic result of power being applied if only for audio peaks inside an envelope of other power it mixes in with. While another is a "STEADY" constant level of power being applied all the time for amplification through the device, aka - the lower, smaller figure of merit.
So throwing 40 watts pep in a tone all the time - like a elongated Roger Beep - can damage the unit.
But throwing a 4 watt carrier driven by even a M104 - when the limiters are kept in place - should prolong the life of the unit - considerably as long as cooling is provided.