[ARC5] ART-13 knobs question

[Hubert Miller]

Do you mean, the red knob paint means the transmitter was not used in autotune ( preset channel )
mode ?
-Hue Miller


On Behalf Of Doran Platt via ARC5
Sent: Wednesday, February 25, 2026 5:50 PM
To: arc5
Subject: Re: [ARC5] ART-13 knobs question

My experience with over 20 T-47, T-47A, and ATC units has most of the autotune knob locking plates having red triangles painted the to indicate, I think, an unlocked knob.  The locking T bar is black.
Jeep K3HVG

On 02/25/2026 6:52 PM EST Hubert Miller  wrote:


I  had never noticed the difference in color of the knobs on the ART-13.
Kinda reminds me of this puzzle in the local newspaper – “Find 6 differences in the drawings”
and the tendency is to overlook what’s “not important”.
So why the red knob skirts and some black ?
Photo via Julyah, pres of the PSARA antique radios club.
-Hue Miller
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