Common Mode Current can really mess with RFI and cause interference in the shack. In addition, you could also be receiving unwanted interference on the coax outer shield. In this video I show how I built myself an easy CMC choke using a toroid and RG-58 coax.
Antenna
80M EH Antenna by WB5CXC
EH Antenna “This is a picture of my EH ‘STAR’ antenna for 80 meters. It has two cylinders made from aluminum flashing 30 1/2” long, wrapped ar… Read more
TETRA 15-17-20-40 m – Yagi Antenna
Specifications Frequency MHz: 21~21,45 – 18,06~18,17 – 14~14,35 – 7~7,3 Active elements: 4 (15m) / 3 (17m) / 4 (20m) / 3 (40m) Gain dBi*: 14,8… Read more
ARSCTL – a flexible web interface for your antenna rotators by DH1TW
Arsctl is a server side application which makes all your antenna rotators available on a network. Arsctl allows you to conveniently control your rotat… Read more
Review
Icom IC-7851 Transceiver – ARRL Review – QST
Contesters and DXers are always looking for that competitive edge to magically pull out the weak signal that is either the rare country or multiplier… Read more
Review: SOTABeams WSPRLite HF WSPR transmitter
Reviewing the WSPRlite transmitter by SOTABeams. Includes a description, demonstration and a look inside. In conjunction with the DXplorer website it… Read more
Portable Zero ICOM IC 7300 Escort
Specifications: Material: 5052 powder coated aluminum (Black) weight: 13.2 OZ measurements: 12″ X 3.70″ https://portablezerostore.e… Read more
Raspberry Pi 3 projects for Ham Radio with 7 inches touchscreen
Raspberry Pi for Ham Radio This is a Raspberry Pi 3 kit with a 7 inches touchscreen that I build in about 30 minutes Raspberry Read more
Equipment
An In Depth Look At ICOM IC-705 HF VHF UHF QRP Transceiver
https://www.youtube.com/watch?v=abbSuqz59co Read more
MTR3b_LCD Mountain Topper
Mountain Topper MTR3B_LCD Launching 10/1/18 – Please note we will have an initial release of 50 units on a first come, first serve basis. There… Read more
GEK SSB HF Transceiver
Project by N.Ganesan & I.Arun Silver series (Low range) for Beginners Gold series (Mid range) for Amateurs Diamond series (High range) for Profess… Read more
Yaesu M-70 | Desktop Microphone
The Yaesu M-70 is a new desk top microphone from Yaesu, it is ideal for the new FT-DX10 model but will function with other Yaesu Models. More info so… Read more
Radio Incident Command Kit by N1RFD
What is my definition of a Communications Go-Kit? A Communications Go-Kit (or Radio-Ready-Kit) is made up of a portable “Amateur radio” st… Read more
The post Reduce Common Mode Current (CMC) with a Easy to Build Choke appeared first on QRZ NOW – Ham Radio News.