Two Way Radio Parts

So y did u buy it??? I'll take it!!

2008-10-26 07:57:06 by yousef0006543

This auction is for a used Bendix King LPH 5142A 2 way 14 chl. 148-174 MHz VHF programmable 2 way radio for parts/repair. This unit was power ...

Two radio antennas A and B radiate in phase. Antenna B is a distance of 110 m to the right of antenna A. Consider point Q along the extension of the line connecting the antennas, a horizontal distance of 50.0 m to the right of antenna B. The frequency, and hence the wavelength, of the emitted waves can be varied

Part A
What is the longest wavelength for which there will be destructive interference at point Q?

What is the longest wavelength for which there will be constructive interference at point Q?

Sorry this all I had time to get.not ans.
λ = 300,000,000/f
Destructive interference occurs when 1/(nλ)^2 = 1/(λ(m + 1/2)^2, or 1/(n)^2 = 1/(m + 1/2)^2

2008-11-19 01:25:01 by Sidhucer

Price: $69.99 $21.95

Equipped with a built in Microphone and Push To Talk button that can be easily clipped to clothing.
1 year warranty from Motorola
Motorola NNTN5211 Surveillance Headset for PTT features a light weight headset that allows you to communicate privately and effectively
Works with Motorola iDen PTT CELL PHONES Only - NOT FOR 2-WAY RADIOS
Separate clip allows earpiece tube to be securely attached to a shirt or jacket collar

hey! ok so my first question is what radio station is the one most known or often gives out Jonas brothers concert tickets or meet and greet passes. My second question is at the concert, i want to make a poster and hold it up during the concert. are you allowed to do that & wouldnt it be annoying for the people in back of me because they wont be able to see? Thanks!

i think its Z100 that does that?
& i wouldn't do a poster.. i was at one concert, and this kid had a poster in front of me and it completely blocked my view.
but it was amazing anyway :]

2008-02-08 13:15:25 by Jessica C

Price: $189.99

Quickly copy the settings from radio to radio with the use of the optional #56517 (cloning, charging, storage) accessory
Durable, lightweight design. Easy for employees to carry and hold all day, yet built to withstand everyday use
Requires FCC license. Compatible with Motorola Spirit GT,GT+, and XTN UHF radios.
Keypad lock, audible call tones, VOX--voice activated transmit with select audio accessories (not included)
Includes Lithium-ion rechargeable battery, drop-in charger, and swivel holster

I'm stepping on the toes of (and will be paraphrasing) George Carlin when I ask this, but I've yet to recieve an actual answer.

How is it that "the FCC, an unappointed body, not elected, decided all on it's own that television and radio were the only two parts of American life not governed by the free speech provision of the first amendment to the Constitution?"

I just don't understand what made the regulation of public television and radio legal. The first amendment says "Congress shall make no law...abridging the freedom of speech." So, how is it that the Federal Communications Commission can regulate what people say or do on public television and radio?

I ask purely in the interest of intellectual enlightenment on my own part, and not to try to start an argument. I really would like to know.

~Premetheus

First of all, broadcasting moving pictures is not "speech". Speaking is speech. Publishing is also historically accepted as "speech". The same assumption is not yet extended to TV and Radio, so regulating TV and Radio is not technically abridging the freedom of speech.

Second of all FCC was empowered to regulate the TV and Radio by Congress see acts 47 U.S.C. § 151 [1] and 47 U.S.C. § 154.[2]
It is legit.

2006-07-07 20:31:28 by premetheus37

My question is in two parts:

What electromagnetic frequency reaches further into space as a clearly discernible signal: TV or Radio (am or fm)?

At what maximum distance could our radio telescopes be placed such that they still receive a clean, man-made signal from earth?

AM tends to be reflected back to Earth, at least at night, which is why at night you can pick up distant AM stations. FM goes right on out, though, as does TV. We sit at the center of an expanding sphere, currently 110 lightyears in radius, of broadcasts, assuming Marconi's original signals got out. Current technology could pick up our signals out to about 250 ly, although of course we don't have signals out that far yet.
A study that was published in Science magazine years ago suggested that aliens receiving our signals could determine the size of the Earth. length of the year and day, size of Earth's orbit, that we have a moon and its orbital period, mass of Earth, Moon and Sun, and a rough idea of the distribution of humans on Earth.

2008-02-01 17:50:12 by screaming monk