newark pd

7 Elements YAGI for 144 Mhz  ^{updated  pop} - The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz SSB/MGM band, in PDF Format

QM5 Yagi for 2 meters band - The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements

Antennas and Feedlines - Long article on antennad and feed lines

Antennas and Grounds for apartments  ^pop - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna

Do You Need an Antenna Tuner  ^pop - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format

Transmitting Antennas For HF Broadcasting - This paper discusses a number of common used HF transmitting antenna systems and corresponding reference antenna codes. The latter was developed in close consultation with regional coordination groups ABU-HFC, HFCC-ABSU.

IARU Region 1 HF band plan - Band Plan for HF Bands by IARU Region 1, effective march 2009.

Elcom Research - Small enough to carry it in your shirt pocket and powerful to fit your needs. It will be your companion for years, thanks to the "FirmwareLiveUpdate" feature. Use it for everyday packet, for APRS, as a Tracker with a GPS or as APRS digi.

500 Khz maritime stations - 305 to 574 Khz stations

Time Zones map - PDF file of standard time zones of the world

Digital Voice in Amateur Radio - John DeGood NU3E, explain priciples of trasmitting digital voice using ham radio devices

Ham radio digital modes  ^updated - An introduction to PSK31, MT63, and Hellschreiber, John DeGood NU3E Trenton Computer Festival in PDF

DK9IP - TS-850 service manual - Kenwood TS-850 manual

Handbook on grounding - U.S. Government's military handbook on grounding in pdf format

Kenwood TS-2000/X service manual - Kenwood TS-2000/X all mode multi-band transceiver in PDF file

Sawt Lubnan Al-Houriya - Daily updated news on events in Lebanon and the MEA. Official web site of the FPM (Tayyar watani Horr) a lebanese political group lead by General Michel Aoun, working for a free and sovereign Lebanon

PDKI - Democratic Party of Iranian Kurdistan

ADDX Schedule - Search for schedule of radio programs by selecting the language

EiBi Schedules  ^updated - Regularly update shortwave schedules of all international broadcasters listed by time or frequency; for free.

NetLogger - NetLogger is a logging program that can use the internet to transmit check-in information to other users of NetLogger. Net participants that are monitoring the net with NetLogger receive updated information every twenty seconds.

RAUMUF - MUF Calculator by G7RAU ( upload updated 31 August 2002) for calculating the possible e MUF on VHF during es season.

PetitTrack - PetitTrack is a satellite tracker for the Sharp Zaurus SL-5x00 Linux PDAs. PetitTrack is based on the keplerian propagator algorithm used in kd2bd's Predict software.

RF and Microwate Power Amplifiers - RF and Microwave Power Amplifier and Transmitter Technologies, amplifierlinearity, efficiency and available RF power devices.

Different grounds for different shacks - Technical questions answered about grounding techniques, in pdf file

Kenwood TS-950S RF gain mod - The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all, of them were produced with a design flaw which allows the RG GAIN control to cease function in the presence of a strong signal IF the AGC has been turned OFF