cte titan 500

A 40m Vertical - This antenna is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m band (7.0–7.2MHz) when only restricted space is available

ARRLWeb: Loop Antenna - Loop antennas articles with restricted access to arrl members

Vertical plane antennas' beaming comparision - Animated quad and yagi comparison. You can see antennas' characteristics behavior in a vertical plane with changing of the height.

CSVHFS Antenna Gain Measurements - The Central States VHF Society has conducted Antenna Gain Measurements since its inception in 1967. Comparisons between commercial and homebrew antennas, between different homebrew designs, and between different commercial designs. Mostly VHF UHF and up antennas.

NorCal Doublet Antenna - A simple antenna that can be erected very fast, only need one center support, and do not take up much storage room. Works from 40 to 10 meters band

RF Electronics - 500 W, KW and 6M ham radio amplifier kits for export

Sunstone Circuits Priority listing - Sunstone Circuits is your easiest source for quoting and ordering printed circuit boards online. We are three respected brands in one: PCBexpress quickturn boards, PCBpro.com full-featured and design-checked boards, and PCB123 design software.

Clover 2000 - CLOVER-2000 is a faster version of CLOVER (about four times faster) that uses eight tone pulses, each of which is 250 Hz wide, spaced at 250-Hz centers, contained within a 2 kHz bandwidth between 500 and 2,500 Hz

Mt-63 technical description - The MT-63 modem, constructed around a high speed DSP processor, either in a dedicated external DSP unit like the Motorola EVM, or in PC software using the PC sound card, transmits 64 tones spaced 15.625 Hz apart, in the 1 kHz bandwidth.

Olivia - The Olivia transmission system is constructed of two layers: the lower, modulation layer is an (almost) classical Multi-Frequency Shift Keying (MFSK) and the higher layer is a Forward Error-Correcting (FEC) code based on Walsh functions.

Pactor - PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.

MARC: Motorcycling Amateur Radio Club - MARC is dedicated to providing safe and reliable two-way radio communications for selected charity events in their respective regions

Unusual HF Propagation Phenomena - This page has a collection of audio samples from unusual HF propagation phenomena, from round-the-world propagation to moonbounced signals , and to ducted transmission.

ICOM IC-706 Modifications - IC 706 modifications collected by mods.dk

Icom IC-718 modifications - mods collected by mods.dk

TS-2000 modifications by Mods.dk - Again, Kenwood TS-2000 modifications collected by mods.dk

Yaesu FNB-78 battery for FT-897 - The Yaesu FNB-78 Battery plugs into the FT-897/D. It produces 13.2 VDC at 4500 mAh. The radio can hold one or two and one can be in use while the other is charging.

Yaesu FTDX-5000 Manual Part 1 - FTDX-5000 Operating manual part 1

Yaesu VX-150 Mods - modifications collected about Yaesu VX-150 by mods.dk

CTE - Cte international, Midland radios, Alan Radio and CTE Broadcast

Mr Test Equipment - Used test equipment from Agilent, Tektronix, R&S, Fluke, Marconi, Acterna, Anritsu, R&S

Beacons - The W6AMT Beacons is a Windows program which automates the collection of radio propagation data. HF data is collected by monitoring the worldwide network of NCDXF / IARU HF beacons.

GeoAlert-Extreme Wizard - GeoAlert-Extreme Wizard maintains updated geophysical indices and displays the information in a friendly - at a glance - manner. GeoAlert-Extreme Wizard features a Global Maximum Usable Frequency, MUF, map that creates and manages predictions from the VOACAP engine. Displayed geophysical indices include: solar wind Bz component, speed and pressure, current WWV type indices and predicted solar flux, planetary A-Index and probability of major storms at middle latitudes for the next day.

Sierra mods - This is a collection of emails collected over time which indicate how to put some mods into your Sierra transceiver. Most of the mods have to do with improving the power output.

Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings