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KD0CQ has recently been experimenting with trying to receive signals at frequencies of up to 4.5 GHz with an RTL-SDR and downconverter. Since a typical R820T/2 RTL-SDR’s maximum frequency limit is about 1.7 GHz, an external downconverter circuit is required.
A downconverter converts high frequencies down into the range receivable by the RTL-SDR. For example a downconverter with a 2.4 GHz local oscillator would convert a 3.5 GHz signal down to 1.1 GHz, which can be easily received by an RTL-SDR….MORE
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BY JIM ALTMAN NEWINGTON — Aside from Connecticut Red Cross volunteers and Americares workers, another faction on the frontlines in the help for Hurricane Florence are the amateur radio operators. Newington is home to the ARRL —... Read more
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T88WI & T88WH – Palau
Palau JH1BGH and 7K1HLJ will be active from Koror, Palau as T88WI and T88WH between November 10-15, 2015. QRV on HF bands. QSL via H/cs. Source: ... Read more
TransAtlantic VHF Digital Beacon Receiver Site – VO1FN/B (GN37)
TransAtlantic VHF Digital Beacon Receiver Site – VO1FN/B (GN37) On 19 May 2016 antennas were erected and the VHF SDR turned on to inaugurate the... Read more
New Icom IC-7300 HF/50/70MHz Transceiver Firmware Update (Ver.1.14)
Icom Inc. has published a new firmware update (Ver.1.14) for the IC-7300 on their global website. This new firmware has been designed to provide sever... Read more
FCC Technological Advisory Council Initiates Noise Floor Inquiry
Radio amateurs frequently complain about increasing noise from a variety of sources, so it should be welcome news that the FCC Technological Advisory... Read more
How to make a 4:1 balun cheap and easy
How to make a 4 to 1 balun cheap and easy Read more
JK2040-Hawk – Yagi antenna of 5 elements for the 20 m band and 3 elements for the 40 m band on a 40 foot (12.19 m) boom
The JK2040 Hawk has phenomenal performance characteristics on 20m and 40m. The 38ft boom 20m Yagi has been optimized for high gain and a good F/R with... Read more
The Siru Innovatios SDR20 multi-touch portable SDR
Siru Innovatios SDR20 multi-touch portable SDR Features: 2-channel transceiver operation Two methodologies for implementation: IQ Mod / Demod and Dire... Read more
ARRL Audio News – May 8 2015
Listen on Download MP3 File Source : ARRL.org Read more
Hamvention Live ! W5KUB and Icom
Hamvention Live W5KUB Broadcast live streaming video on Ustream Broadcast live streaming video on Ustream Read more
H44QQ – Solomon Islands
Hans, DF5UG will be active from Honiara, Guadalcanal Island, Solomon Islands Date: until 3 April 2015 as H44QQ.He will operate on 40 – 10m mainl... Read more
Ameritron ALS-500M MOBILE AMP, 500W SOLID STATE, REMOTE READY, 12V,US
Ameritron mobile no tune Solid State Amplifier –Mobile no tune Solid State Amplifier – uses four rugged 2SC2879 high power linear RF power... Read more
Flex Radio announces The Flex 6400 and 6600 series SDR Radios – Courtesy of Waters & Stanton
Waters & Stanton, the SDR Transceiver pioneer supplier in the UK announced today the launch of the new Flex 6400 and 6600 series radios which will... Read more
Family Guy – Over
Family Guy Stewie gives Brian a walkie-talkie then gives him a hard time when he doesn’t follow protocol. (Season 6: Episode 7) Read more
Antenna Tool App – Android
A tool to help ham radio, CB, and other radio users to create antennas of various types. Calculations available for dipole, vertical (1/8, 1/4, 3/8, 1... Read more
Unboxing and Testing the Yaesu FT-891 : Ham Radio 2.0: Episode 67
Yaesu‘s newest HF mobile radio has some cool new features, but leaves out other options of its predecessors. Let’s take a look at the radi... Read more
Introduces the Limited Anniversary Edition TS-590SG
JVCKENWOOD Corporation (JVCKENWOOD) will release TS-590SG70, an HF/50 MHz special specification transceiver with the TRIO logo under the KENWOOD brand... Read more
Baofeng UV-5R Radios Illegal? The Real Story – Ham Radio Q&A
“The Baofeng UV-5R Radio, just about every ham active on VHF/UHF has one. With a purchase price of around $30, you get a lot for your money. But... Read more
Ham College 24 : Antennas and more questions from the Technician pool
Antennas and more questions from the Technician exam pool. Read more