Ludlum Geiger Counter # 3, 2, 12: Mod-kit To Add Bright Flashing Led $9.50 + S/h

US $180

Gallup, New Mexico, United States
Jun 12th

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NOTE: The $9.50 price plus shipping is for the LED enhancement kit ONLY; The three Ludlum Geiger counters seen in the above photos are NOT INCLUDED. The 6" diameter orange-red Fiesta Ware plate with uranium glaze, seen in photos, is NOT INCLUDED but can be purchased separately in this other ad: Ebay ad # 222016279380 $25. + s/h Postal regulations do not allow shipping of the uranium-glazed plate beyond the USA. $9.50 each kit, plus shipping Enhancement Modification Kit for LUDLUM GEIGER COUNTER Model 3 or Model 2 or Model 12 A spectacular improvement for your Ludlum! To add ultrabright flashing LED lamp, coordinated with "click" sounds! No loss in sound volume at the speaker! ULTRABRIGHT LED LAMP This may be the brightest 5mm LED lamp you have ever seen! It is very much brighter than standard LED lamps of earlier years. When seen at night in darkness, the lens on this round-top LED enables you to view its light, even when reflected from white paper at a distance of 20ft! See the photos, above. The Ultrabright Light-Emitting-Diode is mounted near the piezo loudspeaker. When clicks are heard on the side speaker, the LED lamp does bright flashes! This is a grand improvement for the Ludlum geiger counter series. I have installed this LED on six Ludlums of models 3, 2, and 12, all with very successful results. It has not yet been tested on other Ludlum models. If the audio switch is turned off, the LED lamp does not flash. The LED lamp connects to the piezo speaker, and there is no noticeable loss of sound volume from the side-speaker. This geiger counter enhancement will be great for you if your Ludlum is to be used in a noisy location, or if the user is hearing-impaired! NO SOLDERING ON THE LUDLUM'S CIRCUIT BOARD All soldering is done on the two-conductor insulated wire located near the piezo loudspeaker, a safe distance away from the circuit board. NO SOLDERING is done on or near the Ludlum's circuit board. CHOICE OF LED LAMP COLORS When you order, send me an Ebay memo to identify your preferred LED lamp color: COLOR CHOICES: white or green or red or pink or blue or yellow. If no color is chosen, then I will ship a WHITE LED because the white ultrabright LEDs have the highest brightness. WHAT YOU GET FOR $9.50 PLUS SHIPPING: Pre-wired ultrabright LED with resistor (with two spare LEDs) Set of 12 close-up color print photos Two copies of typed instruction sheet Bag of polyolefin heat-shrink insulation tubing in the correct several sizes 3 pcs. red insulated wire, AWG22, 5" long 3 pcs. black insulated wire, AWG22, 5" long 6 pcs. small cable-ties TOOLS AND MATERIALS NEEDED BUT NOT ENCLOSED: 30 watt soldering iron, with rosin-core solder Electric drill with 3/16" drill bit Small round metal file (to ream out the mounting hole drilled on side of Ludlum aluminum box) Small butane cigarette lighter (to heat the shrink-tube insulation) Piece of duct tape, 2" x 3" (to secure wires to inside of metal box) Tube of adhesive cement (to fix LED lamp into hole drilled near speaker on metal box) FREE BONUS: SUBSCRIPTION INFORMATION FOR TRADE JOURNAL ON LIGHT-EMITTING DIODES (LEDs) Photonics Spectra For the past 15 years, I have subscribed to Photonics Spectra, the trade journal for advancements in LED illumination technology. With your purchase of the Ludlum LED kit, I will enclose information about Photonics Spectra. My subscription has been free because I have a university address. VIDEO COMING TO YOU-TUBE BY SUMMER (July at the latest) I will make a video for You-Tube no later than July, to show how this LED is to be installed. But the instruction sheet, combined with the twelve color still-photos, will enable you to install this flashing LED lamp onto your Ludlum, right now! CAUTION: This modification could void the factory warranty. All my Ludlums were purchased used. But if yours is NEW, still covered by the factory warranty, then you should NOT do this modification! Any modification like this one is likely to void the factory warranty. Install the modification on your older units, not on one that is new. LED ENHANCEMENT KIT: MADE IN USA All Ludlum geiger counters are made in USA by American workers at Sweetwater,Texas; my Ludlum LED enhancement kit is made in USA at Gallup NM, in the "New Mexico Uranium Belt." $9.50 each LED enhancement kit, plus shipping. ================================ Stephen Buggie, psychology professor, UNM-Gallup campus, Gallup NM 87301