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
Promotion video of ICOM IP730D/IP740D
The IP730D series is an innovative hybrid IP radio with licensed professional radio mode for local and nationwide communications. Read more
University in Poland will Launch Balloon with VLF Transmitter On Board
A balloon experiment by Warsaw University of Technology is planned to lift off on September 12, carrying a unique very-low-frequency (VLF) 210-meter l... Read more
IC-SAT100 Operation Guide
https://www.youtube.com/watch?v=O_0sqZIjiCc Read more
ISS 437.800 MHz cross band FM repeater activated
At 01:02 GMT on September 2 a cross band FM amateur radio repeater with a downlink on 437.800 MHz was activated on the International Space Statio. The... Read more
Baofeng UV-82×3 Triband Ham Radio Review and Power Testing
https://www.youtube.com/watch?v=nkZheUgugdQ Read more
Open Source Satellite Work Determined to be Free of ITAR
The United States Department of State has ruled favorably on Open ResearchInstitute’s commodity jurisdiction request, finding that specified?Inf... Read more
![Icom ID-52A/E debuts ! [ ICOM VIDEO ]](https://qrznow.com/wp-content/uploads/2020/08/hqdefault-2-265x168.jpg)
Icom ID-52A/E debuts ! [ ICOM VIDEO ]
ICOM ID-52A /E, Icom new Dual Band Handheld will come soon. Read more
Review
Langstone Project – SDR Transceiver using an Adalm PlutoSDR
https://www.youtube.com/watch?v=TgAkcmd7ixA Read more
5-MHz Interoperability Channels Designated for Wildfires and Hurricane Sally Response
The Federal Emergency Management Agency (FEMA) has announced that two 60-meter channels have been made available, as necessary, for interoperabil... Read more
ICOM IC 705 Raspberry Pi Setup WITH GPS
ICOM IC 705 Raspberry Pi Setup WITH GPS Read more
Comparing The ICOM IC-705 HF QRP & ICOM IC-7300 Transceivers
Comparing The ICOM IC-705 HF QRP & ICOM IC-7300 Transceivers Read more
What is a Ham Radio Hotspot | Digital Voice Ham Radio
Ham Radio Hotspot Read more
An In Depth Look At ICOM IC-705 HF VHF UHF QRP Transceiver
https://www.youtube.com/watch?v=abbSuqz59co Read more
Equipment
RGO ONE HF transceiver – PREORDER
This is third production lot.Please fill in your data so we can arrange shipping of your brand new RGO ONE shortwave transceiver right after it is bui... Read more
Northern Florida ARES Requests Clear Frequencies for HF Nets
Northern Florida Section Emergency Coordinator Karl Martin, K4HBN, is requesting that stations not directly involved in the Amateur Radio Emergency Se... Read more
21st Century Transceiver Design: The K4 High Performance Direct Sampling SDR
The Elecraft K4 High Performance Direct Sampling SDR Read more
Manufacturer Showcase with bhi Noise Cancellation Products
https://www.youtube.com/watch?v=nRHnP51IzCE Read more
“New Elecraft K4s in production
K4 TRANSCEIVER We’re pleased to announce our new top of the line transceiver, the Elecraft K4. It combines the latest in direct-sampling technology wi... Read more
An In Depth Look At ICOM IC-705 HF VHF UHF QRP Transceiver
https://www.youtube.com/watch?v=abbSuqz59co Read more
New tinySA is here!
The tinySA is a small spectrum analyzer, primarily intended for 0.1MHz to 350MHz input but it has some nice other capabilities: Spectrum Analyzer with... Read more
Antenna
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
The repeter antenna of the ISS
The repeter antenna of the ISS Source: URE Read more
RigExpert Stick 230 Antenna Analyzer Review & Operation
Antenna Analyzer Read more
Portable Carbon Fiber Telescopic Antenna Mast With Premium Tripod, Review/Demo
Portable Carbon Fiber Telescopic Antenna Mast With Premium Tripod, Review/Demo Read more
InnovAntennas invest in Ansys
InnovAntennas have invested in Ansys HFSS 2020 R2, a fully 3-dimensional mesh-based simulation package to help in the perfection and product... Read more
Ham Radio EMP Kit, The Tactical Trash Can
“Many believe the worst threat to our electronics is being damaged by an Electromagnetic Pulse. Today I show you how to prevent that damage and... Read more
