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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 Joseph Kenny | Sophie Gloriod, a seventh-grader at Little Flower School in Richmond Heights, certainly could be called a space cadet. Listening to every word that was spoken via ham radio from some 240 miles above the earth, Sophie was n... Read more
![Handheld Transceivers [ ARRL PODCAST ]](https://qrznow.com/wp-content/uploads/2019/04/maxresdefault-1-2-90x60.jpg)
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Japanese Ham Radio Satellite Launch
ChubuSat-2, ChubuSat-3 and Horyu-4 are expected to launch between 0845-0930 UT on Friday, February 12 into a 575 km, 31 degree inclination orbit. Yasu... Read more
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The Giovannini rotators, are designed for medium and very large antenna systems and the specifications that you read below are suitable for this. Mono... Read more
KL7RA in hospital
Photo: K3LR and KL7RA “Rich, KL7RA, is under care for suffering a heart attack. This unfolded before the Sweepstakes CW contest – but he... Read more
Reporting took shot at ham radio operators
by DON IMLAY – Read Full Article: Reporting took shot at ham radio operators Read more
Palstar TR30A – HF Transceiver
The Palstar TR30A is a new 100 watt transceiver optimized for Ham Band only reception using the best of legacy techniques combined with micropr... Read more
Ham Radio Operation in Turkey
“There is no ham radio license revoked in Turkey and ham radio operators are operating normally. The reports on ham radio licenses being revoked... Read more
JD1YBV Chichijima Island AS-031
OGASAWARA, JD1 The Japan Amateur Radio Development Association (JARD) was established in 1991，and we are celebrating its Silver Jubilee this year. To... Read more
Hams in Indonesia Get New Bands
Indonesia’s IARU member-society ORARI reports that the Ministry of Communications and Information Technology has allocated bands of 135.7 — kHz (2200... Read more
IC-7610 – Interview with ICOM
IC-7610 Fiori Films Presents Ham Radio TV: ICOM @ Pacificon 2018. In this video Kevin N6VLF, interviews Will / AA4WJ Faint signals are no longer a cha... Read more
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Wouxun KG-UV9D Experience Multi-Band excitement with the Wouxun KG-UV9D! This multi-modulation two way radio combines dual band transmission, 7 band r... Read more
DX News — ARRL DX Bulletin #7
DX News — ARRL DX Bulletin #7 ZCZC AE07 QST de W1AW DX Bulletin 7 ARLD007 >From ARRL Headquarters Newington CT February 19, 2015 To... Read more
SWR , How To Measure And Is it Important
SWR W6LG, Jim, shows the loss in RG8X in a simple demonstration without using Algebra and Smith Charts. Read more
US House Cosponsor List for Amateur Radio Parity Act Grows
The list of cosponsors for the US House version of the Amateur Radio Parity Act of 2015 (H.R. 1301) continues to grow. The addition of Rep Stevan Pear... Read more
Ham Radio Deluxe 6.4.0.805 Released
he second release of Ham Radio Deluxe for 2018 is now available for download. Please download it from the Download pages on our website at: www.Ham-Ra... Read more
SDRplay RSPduo Review by Mike Richards ( RadCom )
The new RSPduo from SDRplay was released at this year’s Hamvention in Dayton and provides a dual tuner SDR receiver. Each of the two tuners can operat... Read more
4O3A – STATION GENIUS
Station Genius can control: 4 Square Antenna Systems Antennas Antenna Switches Band Pass Filters Beam Stacks Beverages Rotators RS-232 Devices Station... Read more
CQ WW CW Contest 2014 – Raw Scores Before Checking
CQ WW CW Contest 2014 – Raw Scores Before Checking Raw scores as calculated before log checking. Last update: 2014-12-07 : Read more
Despite computers, there’s still interest in ham radio
By R.D. Hohenfeldt “You’d think that with all the computers in homes, all the smartphones in the hands of everybody from children through senior... Read more