Three small leds in series, would drop about 6 volts. At 20 mA, from a 12
volt DC supply a typical value for the dropping resistor would be about 330
ohms. A small full wave bridge rectifier would be needed with about 100
micro farad capacitor at the output if running it from an AC source .
Adjust the resistor value up or down as needed for different voltages.
Might not need the capacitor, just reduce the resistor to about 70 percent
of the DC value to make up for the reduction in brightness.
While it would not be pretty, this could be clobbered together "dead bug"
style and hot melted to the meter top... (Note: I've never seen the inside
of this rotor controller, but if somebody's already done it and it works,
this would be a nice afternoon's project, probably for under fifteen bucks
----- Original Message -----
From: "EZ Rhino" <EZRhino@fastmovers.biz>
To: "Larry" <email@example.com>
Cc: "TowerTalk" <firstname.lastname@example.org>
Sent: Thursday, December 08, 2011 6:46 PM
Subject: Re: [TowerTalk] Yaesu Rotor Dial Lamp
>I have one of these kits. The kit is fine, works fine, marginally bright
>enough in my opinion...probably not quite as bright as the stock bulb.
>Getting the kit is the problem...order it and wait 6 months, no response,
>doesn't answer the phone, ignores emails, etc.
> On Dec 8, 2011, at 16:41 , Larry wrote:
> IdiomPress makes a small illuminator board for HyGain rotor boxes
> which might work. It has 3 LEDs and is intended to sit on top of a
> meter with a clear top. It has a rectifier to get the DC voltage for the
> LEDs from a 28VAC source in the HyGain units. It was about $11
> for the kit I think. I don't know if it would work for the Yaesu control
> unit or not. Search for "Rotor-EZ".
> 73, Larry W6NWS
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