Acoustic Tube
Acoustic Tube
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2 pin Acoustic Tube Kit Earpiece Mic for Motorola GP88 $8.99 |
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2 PIN Covert Acoustic Tube Earpiece For Motorola Radio $0.90 |
Is it true that Ham Radio operators bounce signals off of the moon?
I know that lasers are bounced off of retroreflectors left on the moon, but why do that if ham radio operators have done it for years? Have they?
sure. this is well documented. they even have contests to see who can talk to the most stations that way. they’re been doing it for years. some hams who were using the 2.3 ghz ham band for this tuned their gear down to 2.28 ghz and listened to apollo missions.
the reason they go to all the trouble of using the apollo reflectors for ranging is to get coherent signals off the moon they can measure. ham radio signals illuminate most of teh moon, bounce off innumerable mountains and boulders, and are not all the useful for measurement by the time they get back to earth.
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2 pin Acoustic Tube Kit Earpiece Mic for Motorola GP88 $8.99 |
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2 PIN Covert Acoustic Tube Earpiece For Motorola Radio $0.90 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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MOTOROLA Earphone Earbud Acoustic Tube GP88 GP68 GP300 $6.99 |
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Acoustic tube earpiece for Motorola GP-68 GP-88 GP308 $0.49 |
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Yaesu Earphone Earbud Acoustic Tube VX-1R VX2R VX5R $9.99 |
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Earphone Throat Mic Acoustic Tube MOTOROLA GP300 $9.99 |
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Acoustic Tube Earpiece Mic for Motorola talkabout 1 pin $0.48 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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Covert Acoustic Tube Earpiece Motorola GP340 GP380 VOX $8.99 |
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Headset Mic w/Acoustic Tube For Motorola Talkabout 50mt $16.50 |
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Covert Acoustic Tube Earpiece FOR Motorola Radio 2 PIN $6.99 |
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Covert Acoustic Tube Earpiece FOR KENWOOD Radio 2 PIN $6.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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Acoustic Tube Ear PTT Mic for VERTEX YAESU VX-5R FT-60 $3.74 |
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Acoustic Coil Tube 3.5mm $9.99 |
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20 Ear piece Ear mold For Acoustic Coil Tube FBI Style $39.99 |
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Covert Acoustic Tube Earpiece for YAESU VX-7R VX-6R $13.99 |
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Covert Acoustic Tube Earpiece for Motorola Tetra MTH800 $18.88 |
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Covert Acoustic Tube Earpiece for Motorola Tetra MTH800 $12.67 |
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Covert Acoustic Tube Earpiece for Motorola GP328 GP340 $13.57 |
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Covert Acoustic Tube Earpiece for YAESU VX-7R VX-6R $18.10 |
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C003 1 PIN Covert Acoustic Tube Earpiece Motorola Radio $0.99 |
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C002 2 PIN Covert Acoustic Tube Earpiece Motorola Radio $0.99 |
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C001 2 PIN Covert Acoustic Tube Earpiece KENWOOD Radios $0.99 |
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E85Y Earpiece Acoustic Tube for VX-3R VX-2R VX-160 $8.00 |
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E85Y7 Earpiece Acoustic Tube for VX-6R VX-7R VX-170 $14.00 |
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Acoustic tube Ear PTT Mic for COBRA ICOM MAXON Radio $8.99 |
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2.5mm coil Listen Only Acoustic Tube Earpiece to radio $3.79 |
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SWAT Style Listen Only Acoustic Tube Headset 2.5mm Plug $7.99 |
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Acoustic tube earpiece for Motorola GP-68 GP-88 GP308 $0.49 |
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Acoustic Tube Earpiece Mic for Motorola talkabout 1 pin $0.48 |
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Covert Acoustic Tube Earpiece Motorola GP340 GP380 VOX $8.99 |
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2 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.01 |
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2 PIN Covert Acoustic Tube Earpiece for KENWOOD Radio $0.01 |
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Covert Acoustic Tube Earpiece FOR Motorola Radio 2 PIN $6.99 |
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Covert Acoustic Tube Earpiece FOR KENWOOD Radio 2 PIN $6.99 |
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2-Pin Covert Acoustic Tube Earpiece For Motorola Radio $0.99 |
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Two-Pin Covert Acoustic Tube Earpiece For Kenwood Radio $0.99 |
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FBI CIA Police style acoustic tube earpiece 3.5mm jack $9.32 |
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Headset Mic with Acoustic Tube For Yaesu VX-3R 5R 50y $17.20 |
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2 PIN Covert Acoustic Tube Earpiece for KENWOOD Radios $0.99 |
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2 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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1 PIN Covert Acoustic Tube Earpiece for Motorola Radio $0.99 |
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E85MT Earpiece Acoustic Tube for T5100 T5300 T5432 $8.00 |
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E85M Earpiece Acoustic Tube for FD-150 FD-160 FD-450 $8.00 |
