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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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A popular landing spot for most new amateur radio operators is the two meter band. With the popularity of inexpensive handheld radios like this one, and the proliferation of two meter repeaters, it’s no wonder this is the new Technician’s f... Read more
![Covering the Rules on Calling CQ [ ARRL PODCAST ]](https://qrznow.com/wp-content/uploads/2019/04/55492962_2213350308722602_7533613752353030144_n-90x60.jpg)
![ARRL Straight Key Night 2017 [ Video´s ]](https://qrznow.com/wp-content/uploads/2017/01/20151107_165212-90x60.jpg)
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MULTIBAND H-POLE – VERTICAL WIRE ANTENNA FOR 160m – 10m by HB9MTN
“After several attempts to build a multiband C-Pole I finally ended up with the Multiband H-Pole. C-Poles for different frequencies on one pole... Read more
RPi3 image for SDRplay
SDRplay “This release (V0.4) is a complete image for the Raspberry Pi 3 with a range of pre-built applications for SDRplay devices. Please note... Read more
Why an Amateur Radio Operator is called a HAM by WD4BIS
“By Gerry Crenshaw (WD4BIS) Have you ever wondered why we radio amateurs are called “HAMS”? Well, according to... Read more
There’s a New Ham in the House! ( KG5KIQ )
US Rep Steve Pearce (R-NM-2) has become the third Amateur Radio licensee in the Congress. Pearce recently became KG5KIQ. He joins his House colleague,... Read more
NooElec NESDR Nano 3 – Premium Tiny
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Ham Radio Deluxe v6.4.0.876 – Update
This release fixes issues with saving the State and with DX cluster performance issues. 0002817: [Bug] Logbook: crashes when loading world map resour... Read more
Mobile Antenna Little Tarheel HP
” When properly installed on your vehicle this antenna will provide continuous coverage from 7.0 to 54 MHz with the supplied whip. The Li... Read more
Coaxial cable quality review
Coaxial cable quality review – Read full Article: Read more
Improving 160 and 80 meter antenna performance by W3LPL
W3LPL presents Improving 80m and 160m Antenna Performance at the January 2016 Frankford Radio Club meeting. Read more
C56XA Gambia
Alan G3XAQ will be active from Gambia, 16 May to 4 June 2015, as C56XA.Active in CQ WW WPX CW Contest.QSL via G3SWH Read more
MFJ-1835 Cobweb assembly by two beginners
Danielle’s back!! This time she’s hosting the show and got a little help from her friends to put together an MFJ-1835 Cobweb antenna Read more
Over 500 amateur licenses revoked ( Ofcom )
All UK amateurs are required to revalidate their licence at least once every five years. Ofcom have now revoked around 530 licences that have not been... Read more
Kenwood TS-990S HF/6m Flagship Base Station Being Built
Kenwood TS-990S HF/6m Giving you a rare glimpse behind the scenes at Kenwood’s Communications Division factory at Yamagata, in northern Japan,... Read more
X-Quad antennas for 2m and 70cm
Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. They are especially designed for amateur radio, with the followi... Read more
Turn any headphone into a high-performance communications headset
MODMIC Turn any headphone into a high-performance communications headset. The ModMic 4.0 is a high-fidelity directional microphone that you can add to... Read more
Compact In-Line stereo DSP noise cancelling module -BHI
Compact In-Line stereo DSP noise cancelling module £179.95 Net Price (ex VAT) £ 149.96 Add to Cart Compact In-Line 0.270 kg Weight: A-COMPACT IN-LINE... Read more
Getting Started with the FM Satellites
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