If you spend a bit of time geocaching, chances are you'll see a frog with an antenna attached to his head. This is Signal the Frog, the official Geocaching mascot. Signal was created in the early days of Geocaching.com as a way to represent the combination of technology and nature.

Dec 13, 2022 · Signal the Frog is a small green amphibian that is the official mascot of the popular outdoor activity, goecaching. He was introduced in 2002 and quickly became a beloved figure among the goecaching community. Signal is often seen in goecaching stickers, patches, and other memorabilia.

Mar 25, 2025 · Every three months, we’ll feature geocaches from that quarter’s theme on the Geocaching Blog and social media. We received so many nominations for our first hiding theme, frogs, that it was difficult to choose just a few to share! Take a look at some of the caches that “leapt” out to us: GCAZHCK —Signal, o Batráquio!

Geocachers can log the cache by finding and taking a photo with either the official full-size Signal the Frog® mascot or the official 20th anniversary Signal the Frog® banner.

Sep 10, 2020 · Signal the Frog is the lovable mascot of geocaching.com. But where did he come from, what is his history, and why does he have an antenna in his head? This episode I look into his origins and discover that he’s, not only a trackable, but for a limited time, he’s also a locationless cache. Cache Highlight: “ Ole Pecan “ Transcript.

In self-diffraction FROG (SD FROG), two beams overlapping in a χ (3) medium generate a nonlinear refractive index grating, which diffracts both beams into new beams, one of which is used for detection.

The FROG—signal is a convolution of the unknown electric-field E(t) E (t) with the gating-field g(t) g (t) (often a copy of the unknown pulse itself).

In its simplest form, FROG is any autocorrelation-type measurement in which the autocorrelator signal beam is spectrally resolved. Instead of measuring the autocorrelator signal energy vs. delay, which yields an autocorrelation, FROG involves measuring the signal spectrum vs. delay.

Acoustic communication is essential for the frog's survival in both territorial defense and in localization and attraction of mates. Sounds from frogs travel through the air, through water, and through the substrate.

Apr 11, 2016 · Instead of shouting over the sound of rushing water, these frogs communicate by jumping, head bobbing, arm waving or even wagging their toes.