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In audio signal processing and acoustics, echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is proportional to the distance of the reflecting surface from the source and the listener. Typical examples are the echo produced by the bottom of a well, by a building, or by the walls of an enclosed room and an empty room. A true echo is a single reflection of the sound source.
The word echo derives from the Greek ἠχώ (ēchō), itself from ἦχος (ēchos), "sound". Echo in the folk story of Greek is a mountain nymph whose ability to speak was cursed, only able to repeat the last words anyone spoke to her. Some animals use echo for location sensing and navigation, such as cetaceans (dolphins and whales) and bats.
New in box, never mounted or used. Comes with everything as new from factory.
Needing to sell, not looking for trades. Cash, Apple Pay works best; I’m willing to ship if the buyer pays for shipping cost.
I'm selling my fostech phantom premium light with fostech echo sport binary trigger installed(one shot for pull ,2nd shot on release).
It comes in sniper gray, and only weighs in at 5.6lbs making it the lightest ar on the market .all premium built with high quality parts from fostech. Chambered...
Ar Echo II trigger. I have the original box and paper work. Has been used for two mags then put away for a future build. I’m deciding to go in a different direction. It’s in good shape and runs fantastic.
Looking to get 350 Obo
I'm looking at buying a new chainsaw and want at least an 18" maybe 20" bar.
I'm at looking $350/$400 for a new one.
Which brand/model would you get?
I don't cut up cord after cord, but I will soon be faced with a lot of 10"/12" oak tree limbs resulting from pruning, plus this winter I'll be...
For those of you who have been looking at binary triggers, the Fostech echo II is around $400 and franklin armory's is also expensive. Doubletap has one for around $200 but I have heard it has a heavy trigger pull (no personal experience).
The Fostech echo sport is a cheaper version that uses...
Excellent Condition Del-Ton Echo 308.
Round count around 500 (including 3 that dropped hogs in Texas last year).
Burris MTAC30 4.5-14 x42
Magpul ACS stock
Cantilever mount (Cannot remember the manufacturer but it is rock solid.
Original metal 20 round magazine and 2 new pmag 20s
2 boxes (-4...
E93 V4/QD Quick detach sling mount for AK underfolders and some AK pistols. New in the package, check Echo 93's website for specific models that this unit fits. Look under the V4 section. $30 may be willing to trade for 9mm projectiles or 223 projectiles. Thanks for looking.
I have a FosTech Echo trigger that has less than 500 rounds on it. Retail is 480 and I am looking to sell for 400 firm.
it was only used once for testing and review and is a pretty cool gadget. However. I'm in need of finances to pay some pressing bills so this is the first thing on the block...
So I was just looking at the page on Fostech's website for their Echo trigger which fires on the pull and release. Then I noticed that they are listing Oregon as one of the states they cannot ship to. This came as a total surprise to me. Can somebody clue me in as to what law it is that makes...