Hello CW: Modifying a radio is a lot fun and gives the user a great satisfaction. Many many radio enthusiasts always want more power, more audio, and to be loud and proud. Granted.
But you need to know what it takes to make a good mod. As an example you need at least 6 to 10 dB increase in your output power to double your range. That being said what little improvement if any in a output mod on these mass produced radios were they use the cheapest parts available to keep production costs down. A 6 dB gain means if the radio puts out 4 Watts, then 4 x 4 = 16 watts, and for 10 dB that 4 watts would be increased to 40 watts. Your wanting to modify a 4 Horse power radio into a 40 Horse Power radio. It ain't gonna happen with the stock factory parts. Some Mods can increase the out power and modulation, but only slightly.
I looked at the You Tube video that you talked about I believe, I want to see the before and after radio performance on a Watt Meter, Scope, and see what the output spectrum is, meaning did the radio increase in unwanted harmonics and such. Not the normal radio guy type of equipment everybody has.
Modifying radios is doable but requires technical knowledge and test equipment. When I was a kid we use to install a "Strap" (the term "Big Strap) or bypass a resistor in our General Radiotelephone Super MC=11A radios, this resistor was in series with the finial Plate circuit and gave us a like about 10 watts out, but then the modulation went down because the Modulator didn't have enough power to properly modulate the finial tube because it was drawing more power, requiring more audio power from the modulator. After a few years we removed the bypass wire and got louder.
I see some modifications were a amplifier is added to get more power out, but is expensive and needs a Tech to install. Good Luck.
The coils can be squeezed back into place if needed, but may not be the same after being widened, be advised.
Jay in the Great Mojave Desert
QUOTE=CyberWarrior;2511386]I have been looking at some You Tube videos,on this radio.
In one of them,the guy tells you to spread the coils turns as 2-2-3-2 and the other ones 2-2-2-2-.
He claims that this will improve your AM upwards modulation.
Has anyone here tried this? If it fails,can I put the coils back,the way they were?[/QUOTE]
