开云体育

I don't see Oc71 mentioned anywhere here.? Just your comment:? "I don't think you can buy LDR's anymore because of the cadmium in them."

Vince.



On 08/06/2017 02:58 AM, chris gress wrote:

Oc71 was mulard part :)

On 6 Aug 2017 05:45, "Vince Vielhaber" <vev@...
<mailto:vev@...>> wrote:

? ?
? ? <>

? ? Vince.



? ? On 08/05/2017 11:15 PM, AA9GG wrote:

? ? ? ? I don't think you can buy LDR's anymore because of the cadmium
? ? ? ? in them.
? ? ? ? I had a design where we had to re-do it using photo diodes. Not
? ? ? ? sure if
? ? ? ? those would wok in this application (I'll try and let you know),
? ? ? ? but a
? ? ? ? linear opto-coupler might.? They are a little pricey though.

? ? ? ? I did a quick search and Mouser is still selling AdFruit brand photo
? ? ? ? resistor, so may be we are ok for now

? ? ? ? On Sat, Aug 5, 2017 at 9:19 PM, KC8WBK via Groups.Io
? ? ? ? <cruisenewsnet=yahoo.com@groups.io <mailto:[email protected]>
? ? ? ? <mailto:cruisenewsnet <mailto:cruisenewsnet>=yahoo.c[email protected]
? ? ? ? <mailto:[email protected]>>> wrote:

? ? ? ? ? ? I have not covered the led with tape yet, so I get to watch
? ? ? ? flashes
? ? ? ? ? ? of light as the loud signals are attenuated.? It is great when I
? ? ? ? ? ? hear a strong signal and know that normally it would have
? ? ? ? probably
? ? ? ? ? ? caused some hearing distress, but now it is limited.? I
? ? ? ? especially
? ? ? ? ? ? like the lightning static crashes which instead of going
? ? ? ? "crash",
? ? ? ? ? ? there is a flash of light and it is more of a "puff". I like to
? ? ? ? ? ? think of the flash of light coming out of the bottom of my
? ? ? ? radio as
? ? ? ? ? ? a facsimile of the lightning that caused the crash. A very
? ? ? ? ? ? worthwhile mod.




? ? ? ? --
? ? ? ? Paul Mateer, AA9GG
? ? ? ? Elan Engineering Corp.
? ? ? ? <> <>
? ? ? ? NAQCC 3123, SKCC 4628


? ? --
? ? ? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

--
? Michigan VHF Corp.? ?? ?
? ? ? ? ? ? ? ? ? ? ? ? ?