FCC General Class Element3

FCC 米国アマチュア無線　General Class の勉強に向けて弱点のメモです。

攻略のポイントは理解しようとせず、単語を拾い集める事です。

何度かやると内容が想像できるようになってきます。

My weak point 

Aurora > VHF reflect

solar radiation > 10.7cm

coronal mass ejections > 20-40 hours

K-index > short term stability

A-index >  long term stability

30m band > phone image prohibit

inpedance > AC opposision

reactance > capacitance or inductance

ALC > reduce distortion to excessive drive

IF shift control > close the receive frequency

reason to use impedance matching transformer

> to maximize the transfer of power

impedance matching between two AC circuit

> insert LC network

improper action ALC > distort superiors emission

field strength meter > radiation pattern of an antenna

directional wattmeter > SWR

two-tone test analyze > linearty

◯watts pep

beacon > 100 watts pep

1.8 MHz > 1500 watts pep

60m band (5 Mhz) > 100 watt pep respect to a dipole

10.140 MHz > 200 watts pep

12m band( 25Mhz) > 1500 watts pep

28 MHz                  > 1500 watts pep

【興味ある事】

PACTOR

WINMOR

JT65 JT9 FT8