Technician HAM Exam Stucky Guide
by Joe Foley (foley@mit.edu)
=========================

Some useful info for the test:

Resisters and stuff:
V=IR
P=VI
Capacitors add in parallel
Inductors add in series
(reciprical sum of reciprocals for other)

Wiring plugs:
black or reg is hot
neutral is white
green or bare wire is ground

984 300
---- = Ft ---- = M
F(mhz) F(mhz)
(Wavelength equation)

Antennas:
---------

A half-wavelength antenna is one-half wavelength in length. suprise there...

SWR(Standing Wave Ratio) - the lower, the better

A yagi antenna has at least 3 elements: Reflector, Driven, Director - in order of largest to smallest

Direction of Electrical field oscillation in an EM wave determines its polarization. The emitting element of the antenna usually determines this.

Frequencies to memorize
3675-3725k 80M
7100-7150k 40M
21.1-21.2M 15M
28.1-28.5M 10M
1270-1295M 23cm
Technicians get all Ameture freq above 50Mhz

Novice has a 5WPM codetest and Element 2 Theory test

Technician has Element2, Element 3A, and no Code

Repeaters:

Technician and up are allowed to use repeaters and beacons

Repeater has input frequency and outputs on other freq.

CTCSS(PL): subaudio tone which might caus a reciever to recieve a signal

Autopatch allows phonecalls through repeater

Digipeater is a digital repeater

Courtesy tone tells when transmission is complete

Timeout when transmissions too long

"break, break" in an emergency

Separation:
2M 600kHz
1.25M 1.6MHz
70cm 5MHz

"Your signal is full quieting..." = strong enough to overcome all reciever noise

Station ID: using callsigns

Types of callsigns: first letter always A,N,K,W

Extra A: 1x2, 2x1, 2x2 : W1MX, AB2H
Advanced B: 2x2: WA1YR
General,Technician,[Plus]C: 1x3: N1ZRN
Novice D: 2x3: KA2ZLZ

RTTY:
RTTY can use Baudot, AMTOR, and ASCII
28-50MHz 1200bd
50-222MHz 19.6Kbd
222-Up 56Kbd
Freq shift:
<50Mhz 1000Hz
>50Hz No max

Bandwidth:
general: 2-3kHz
FM: 10-20kHz
data:
50-222MHz 20kHz
222-450MHz 100kHz

Transmission Power:
PEP: Peak Envelope Power
- Technician max of 1500W
HF(80,40,15) 200W
HF(10,30) 200W
Beacons 100W
Near some military installations
(450Mhz) 50W

Freq sharing:
Primary basis: takes precedance over Secondary, but equal with other primaries

Prohibited Transmissions:
- accepting direct and inderect payment for operating an amateur station (except in very specific special circumstances)
- broadcasgin
- news gathering
- transmitting music
- aiding criminal activies
- transmitting codes and ciphers
- engaging in obscentity, profanity, and indecency

Decibals measure gain with reference to something. 3dB is about a doubling so 9dB is 8 times

Morse info:
Go only as fast as you can recieve and transmit
proper calling: CQ CQ CQ DE (station1)
respond: (station1) (station1) DE (station2) (station2)
CQ: calling any station
DE: from
K: Any station transmit
73: Best Regards
DX: Distant station
RST: signal report for reception
Readability, Signal strength, Tone
QRS: Send more slowly
QTH: My location
QSL: Verfification of a contact
QRZ?: are you calling me?
QSO: A conversation is in progress
QSY: Change freq
QRL?: freq in use?
SOS: distress

Voice:
similar to morse: Say "CQ" 3 times, "this is", "(station1)" 3 times
respond: "(station1)", "this is", "(station2)"phoenetically!
MAYDAY: distress

Connectors:
PL-259 is a funny screw connect used on feed lines
BNC is the twist-lock ones
Type-N connectors have the least loss