The Heil Parametric Receive Audio System Equalizer (PRAS EQ) is a state-of-the-art audio processor that enhances the internal audio systems of amateur radio, shortwave, commercial, and CB receivers. The PRAS EQ allows radio operators to modify, shape, and improve the audio output of their receivers using three separate equalization controls.
Midrange frequencies are the most critical for achieving clear voice articulation in receive audio. The PRAS allows operators to have unique control over these important frequencies. First, operators can adjust the parametric midrange filter (MID FREQUENCY) from 400 Hz through 4 kHz, with the recommended sweet spot being at 2.5 kHz. In addition, operators can control the presence of these midrange frequencies plus or minus 15 dB using the MID GAIN control. Combined with a low-frequency filter (LOW) set at 160 Hz, and a high-frequency filter (HIGH) set at 6 kHz, the PRAS provides operators unparalleled control and quality of their receive audio.
VHF
6000km TEP path on 144 MHz opens up between Buenos Aires and the Dominican Republic
Hot on the heels of the last post about the 5400km TEP opening on 144 MHz between Argentina and the island of Aruba, we have details of some more cont... Read more
Retevis RT95 Budget Dual Band Mobile Transceiver
Specifications GENERAL Frequency Range VHF:144-148MHz UHF: 430~440MHz Number of Channels 200 channels Channel Spacing 25K (Wide Band) 20K(Middle Band)... Read more
ARRL Asks FCC to Allow 3.4-GHz Operation until Spectrum is Occupied
In comments to the FCC, ARRL has argued that radio amateurs be allowed to continue shared operation in the 3.4 GHz band until 5G licensees who purchas... Read more
OH2BC installs large InnovAntennas 50MHz array
Every now and then, a really special antenna system gets installed and usually it is a result of desire, commitment and dedication of the station owne... Read more
3000km plus contact made on 433 MHz from St.Helena to South Africa
On the 16th of October 2020, there was a remarkable 3000+ km contact made on the 70cms band between South Africa and St.Helena in the South Atlantic.... Read more
Baofeng BF-F8+ III Tri Band HT Radio | Tri Band Ham Radio Handheld
The BF-F8+ is the first UV-5R radio to get a full internal upgrade.It has the updated internal components of the GT-3 but also full backward comp... Read more
RSGB Radio Communication Handbook
14th Edition Edited by Mike Browne, G3DIH This new edition of the RSGB Radio Communication Handbook has as always been updated and re-written so that... Read more
Review
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YAESU FTDX10 [ VIDEO ]
YAESU FTDX10 Read more
Best Handheld Ham Radio for Off Grid | HunVting – Survival Ham Radio
“Today I talk about my 5 current picks for Handheld Ham Radios at my Hunting Lease, where we operate off grid. All radios have various features... Read more
Tips on Operating Linear Amateur Radio Satellites (Part 2)
Tips on Operating Linear Amateur Radio Satellites (Part 2) Read more
Ham radio & 3D printing – A very portable table stand for the Icom IC-705.
Ham radio & 3D printing – A very portable table stand for the Icom IC-705. Read more
Chameleon F-Loop TOTAL! Kit and CHA Single Loop
Chameleon F-Loop TOTAL! Kit and CHA Single Loop The CHA F-LOOP 2.0 was designed with portability, ease of use simplicity, ruggedness and high performa... Read more
YAESU FT-DX10 Update and SDR Chat
Here are some great photos of the new FT-DX10 plus a chat about SDR. ESTIMATED DECEMBER 2020 The New Yaesu Ftdx10 UK VERSION COVERS 4m ! T... Read more
What is POTA? Parks On The Air Ham Radio
What is POTA? Parks On The Air Ham Radio Read more
Equipment
New RFinder B1, Advanced VHF/UHF 4 Watt DMR/Analog Ham Radio Smartphone, NO CODE PLUGS NEEDED!!
“My switch back from iPhone to RFinder happened in this video. A dual band VHF/UHF radio with a newly designed receiver for better sensitivity,... Read more
Connecting the MX-P50 amplifier and LDG Z11 pro tuner to the IC-705
Connecting the MX-P50 amplifier and LDG Z11 pro tuner to the IC-705. Read more
Airspy HF+ Discovery is the Most Refined HF/VHF SDR
The Airspy HF+ Discovery sets a new standard in terms of reception performance with extra pre-selectors for all the supported bands and a New DSP Core... Read more
Newly released pictures of the new FTDX10 SDR
Newly released pictures of the new FTDX10 SDR Read more
ICOM IC-705 Antenna Mounting Bracket & Patch lead
NEVADA RC-105 A beautifully made bracket, complete with, BNC to SMA patch lead and mounting mounting screw, for connecting a PL-259 style portable ant... Read more
QCX-mini is coming soon!
QCX-mini is a response to quite a few comments on the new QCX+ kit, from people who want to take it out portable for SOTA operations and other po... Read more
![The New Yaesu FTDX10 [ UPDATE ]](https://qrznow.com/wp-content/uploads/2020/11/ft10_yaesu-265x168.jpg)
The New Yaesu FTDX10 [ UPDATE ]
Yaesu FTDX10 New Yaesu compact HF and 50 MHz 100W SDR Transceiver available in December 2020.Functionalities of the top line models in a smaller form... Read more
Antenna
KM4ACK End Fed Half Wave Antenna Build And Review
KM4ACK End Fed Half Wave Antenna Build And Review Kit includes everything you need to build a 49:1 end fed half wave antenna. Antenna works without ne... Read more
Five Wire Antennas Vying for Reference Station
Five Wire Antennas Vying for Reference Station Read more
A Super-Duper Tiny 3D-Printed HF Radio Antenna.
A Super-Duper Tiny 3D-Printed HF Radio Antenna. Read more
Small Garden Vertical HF Antenna Installation
Vertical HF Antenna Installation Read more
An Unusual Jpole Antenna
An Unusual Jpole Antenna Read more
CHA MPAS LITE: CHAMELEON DESIGNS A NEW QRP COMPACT PORTABLE ANTENNA SYSTEM
The CHA MPAS LITE is the little brother of the CHA MPAS 2.0 – the most popular Modular Portable Antenna ... Read more
How I designed the Nebula eXtreme Multiband 18m DX Commander Antenna
eXtreme Multiband 18m DX Read more
![YAESU FTDX10 [ VIDEO ]](https://qrznow.com/wp-content/uploads/2020/12/127933142_1316110978725336_3068618992769129607_n-90x60.jpg)
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