cobra 29 modifications

A 5 element beam for 10 meter band - Here is a very simple 5 element covering the entire 10 meter band (28.000-29.700) with a swr of less than 1.4 at the band edges

Build a multiband dipole - A nicely documented procedure to build a multiband dipole spending $30 in material and half an hour in assembling by Andrew Daniel - KI4QFY

W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.

North West CB Radio - North West CB Radio is a page with radio modifications’s, Local Portland’s Traffic info, Trucker things like CB slang, DX info and a forum. Also we host The Saturday Night Stomp Fest in the Portland area. Results are posted weekly.

KD4MZM Beacon system - The kd4mzm ham radio beacon system running a Cobra 148 GTL 40 channel AM/SSB unit modified to the 10 meter band

VK8NSB's IOTA page - Melville Island OC-173, Croker Island OC-229, IOTA DXpedition 1999

YN2N Guest House Nicaragua - In YN2N Guest house you can enjoy the visit to Granada meanwhile you can use our YN2N Ham Shack full of equipment, in a beatifull rural property just 10 minutes from Granada.

JH5LUZ Blog - 1296Mhz EME Station from Japan, includes eme amplifiers pictures

Boca Raton Amateur Radio Association - The home page of the boca raton amateur radio association. we meet on every first tuesday of the month and operate the 145.290 repeater. Palm Beach County, Florida.

W2RUI Lockport Amateur Radio Association - Serving the Amateur radio community in the Lockport, New York area, since 1929.

Intruder Amplifiers - Poewer amplifiers for 10m band. Also dealer for Galaxy, Connex, Magnum, Cobra, Browning, and others

6m technical docuemnts - A collection of scanned diagrams and designs, documents and modifications for 50 Mhz ham radio equipment

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

Modifications for the Kenwood TS-850 - Another good collection of TS-850 modifications

Two Kenwood TS850 modifications - Here are two simple modifications / repairs for the Kenwood TS850 HF transceiver, dual receiver mod, and battery pack replacement

FT-1000D mic. modifications - A collection of mods for the yaesu FT-1000D

Modifications for the Yaesu FT-847 - Some interesting mods for the 847

FT-897D Modification sheet - Lot's of FT 897 modifications in a single PDF file

WZ1V's VHF modifications page - A collection of modifications to the AM6154/55 linear amplifier

Modifications to the Ameritron AL-1200 Amplifier - This page describes two modifications W8WWV made to his AL-1200 amplifier. The mods were obtained from Ameritron, so they are official.

AM-6154 FAA Amplifier circuit conversion - AM-6154 222MHz grid Conversion Information by N0UK

JH5LUZ Room - 1296MHz M57762 * 16 Power AMP 16V 100A 1.6KW Input

AM6155 / 64 modifications - KF0M's mods for the AM6155 AM6154 RF amplifier

Yaesu FT-1000D HiFi SSB Audio and Mods - Using Hi-Fi Audio with FT-1000. Includes many FT-1000D modifications too by K6JRF

Interferences and filtering - General information on Filter passbands, interferences, TVI and RFI problems