Questions from the General Amateur Radio exam pool part 22. A simple method for Decibel power calculations. Receivers.
Antenna
Vehicular HF Antenna Base 1.8 – 54MHz
The CHA HYBRID Base is designed to enhance the capabilities of the common HF radio application by allowing faster tuning operation across the HF bands... Read more
MonoBeam Yagi MB7 10-15-20-40
MonoBeam Yagi MB7 The MB7 10-15-20-40 is a quad band antenna for 7 MHz, 14 MHz, 21 MHz and 28 MHz with loading coil and capacitive hat for 40m only. T... Read more
![NVIS: Near Vertical Incidence Skywave [ PodCast ]](https://qrznow.com/wp-content/uploads/2017/11/24180150-190x122.jpg)
NVIS: Near Vertical Incidence Skywave [ PodCast ]
Sometimes the best direction to send your signal is straight up! Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path... Read more
2m Yagi Beam Antenna | 144 MHz 10 Element Super-Light High Gain OWL G/T
OWL G/T Yagis Beam Antenna are specialized, ‘hot rod’ versions of the already high-performance OWL – Optimised Wideband Low impedan... Read more
LOOP RX 160/80/40
LOOP RX 160/80/40 Technical specifications 160m Gain – 29dbi 80m Gain –18dbi 40m Gain- 10dbi Weight 7Kg Price 420 Eu... Read more
VHF
2020 Summer VHF/UHF Field Day Contest
“The 2020 VK Summer VHF/UHF Field Day, a ham radio contest was held on the weekend of January 18th and 19th. The contest is split into either an... Read more
Introducing The Android HT
by Bob K0NR “Some exciting news wandered into my inbox this past week concerning a handheld radio driven by the Android operating system. The RF... Read more
BTECH UV-50X3 – TRI BAND (VHF/1.25M/UHF)
ARLINGTON, SOUTH DAKOTA – WEDNESDAY, 13 JULY 2016 A Full Duplex 50 Watt Tri-Band Radio from BTECH is Released BaoFeng Tech announced today the r... Read more
Yaesu announced the FT-70DR
Yaesu FT-70DR C4FM FDMA / FM 144/430 MHz DUAL BAND 5W Handheld Transceiver The FT-70DR is a compact System Fusion transceiver providing both conventio... Read more
Alinco DJ-MD5 Dual Band DMR HT Radio
“Finally one of the “Big 4” manufacturers is making a DMR Radio for Amateur Use. Alinco has done a good job of taking a radio and ad... Read more
Equipment
HAL1200 Atlantic – HF linear amplifier
HF linear amplifier Specifications Frequency : 1.8 ~ 54 MHz, all Amateur Bands including WARC Automatic Band Change: only PTT/TXGND Signal, or with de... Read more
MFJ-993B DUAL POWER AUTO TUNER , 300/150W, 1.8-30MHZ
MFJ IntelliTuner Automatic Tuner Automatically tunes unbalanced/balanced antennas . . .Ultra fast . . . New 20,000 memories . . . Antenna Switch . . .... Read more
SO-239 antenna ballmount for mobile Station
SO-239 connection on top of the ball mount for the antenna and for the PL-259 connection on the inside of the vehicle. The plates are 3 inches in... Read more
Icom IC-R9500 ( 0.005–3335MHz )
Wideband coverage The Icom IC-R9500 covers 0.005–3335MHz*1 in SSB, AM, FM, WFM, CW, FSK and P25*2modes. It is suitable for a wide variety of radio mon... Read more
Daiwa SWR & POWER METER CN-101L
Daiwa SWR & POWER METER CN-101L FREQUENCY：1.8～200MHz POWER RANGE：15/150/1500W INPUT CONNECTORS ：M SWR and Power indicators are insta... Read more
Review
Survey of Less-Expensive Vertical Antennas
Oggie Mike, KB7HFS, asks for a recommendation for a new vertical antenna. He already has a radial field and a mount; his prior antenna was destroyed i... Read more
Learning Morse Code, Straight Key or Paddles?
“The eternal question and a sure way to start trouble at your next Ham radio club! Is the straight key a better learning tool or will the modern... Read more
Icom IC-705 with the mAT-705 Portable Tuner
“Today I operate the Icom IC-705 at my hunting lease as a portable radio with an End Fed Random Wire antenna from Nelson Antennas, and the mAT-7... Read more
How Your Radio’s Final Amp Class Affects Efficiency
An Oggie asks why his radio draws so much more power than the 100 watts it puts out. The answer lies in using linear final power amps in the Class A,... Read more
My Wife Bought More Radio Gear On Wish and Ali Express
My wife surprised me at the end of 2020 with a new random box of goodies from Wish and AliExpress. Today we unbox some of these ODD radios and radio a... Read more
