[Yaesu] Ft-2200

Sun, 10 Nov 2002 21:03:46 -0800

Another alternative is low-level modulation. This reduces the carrier output
of the PA by 6 dB (5W from a 20W transmitter) and eliminates the need for a
high-level modulator.

But...try and get that thing type-approved and TSO'd. Rotsa ruck.

Like the man sez, type-approved AM HT's for the aeronautical radio service
are available at reasonable prices, especially on the second-hand market.

Cheers for now, 73,
Adam VA7OJ/AB4OJ

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of [email protected]
Sent: Sunday, November 10, 2002 20:49
To: Dale McGraw
Cc: yaesu
Subject: Re: [Yaesu] Ft-2200

To xmit AM on a FM rig involves an extensive modification AND
additional parts since high level AM usually needs 1/2 the RF output
in audio Watts to modulate 100% (IE a 20watt carrier radio needs
10 watts of AUDIO)...also the VCC of the final xstr will have to
be reduced as the modulation will push the voltage over the max
rated limits thus BLOWING the xstr (you have to reduce the VCC to
half...thus lowering the carrier power output)

It is NOT an easy task....and it is not recommended...

and of course it is not legal...

AM HTs for aircraft are available to buy as backup

Chris
WB5ITT

Dale McGraw wrote:
>
> Does anybody know of a mod to the FT2200 that will make it transmit Am
> on the aircraft band?  I know it is not type accepted there but a friend
> in Alaska wanted to have that capability as an emergency backup option
> just in case.  Appreciate any help.
>
> 73, Dale
>

Moderator: Ray Brown, KBXSTN
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