Are the "string" wires different from regular electroluminscent panels?? Those run at about 120 VAC 400 Hz which is pretty easy to create without much EMI.
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On 11/30/2024 9:15 PM, Peter E via groups.io wrote:
Hi Dan,
I just looked up some info on electroluminescent wire. It needs to be driven with high frequency AC at a fairly high voltage. Not something you would want anywhere near a sensitive receiver I would think.
Cheers,
Peter
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*From:* [email protected] <[email protected]> on behalf of Dan Rae via groups.io <danrae@...>
*Sent:* Sunday, 1 December 2024 9:37 AM
*To:* [email protected] <[email protected]>
*Subject:* Re: [RacalRadio] Racal RA-6790GM/R2174 New to Me
On 11/30/2024 1:27 PM, Peter E via groups.io wrote:
Hi Dan,
Absolutely correct - I actually meant to say NiMh (must be getting old).
And of course I did mean /less/ prone to leakage :^)? Even older.
I like your led lighting solution. I also wonder if it is possible to use that electroluminescent "string" that is available in various places? That would give really even illumination
Two things there, first there is not a lot of height between the existing board and the front panel, so not a lot of room for those strips.? Secondly you need the small surface mount LEDs that shine sideways to light the LCDs.? The original LED lighting on the GM needed a re-worked acrylic piece to accommodate the only LEDs that were available at the time.
I've done a few like that, the only advice I'd give would be to buy some extra LEDs, since they have a habit of jumping off the board never to be seen again.
73 - Dan
