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
Icom VE-SP1 LTE/PoC Radio Desktop Conference Microphone
A short video about the Icom VE-SP1 desktop conference speaker microphone which enables a simultaneous voice conference in multiple locations by combi... Read more
Iridium Command Center Explanation – ICOM
Icom’s satellite radios utilize Iridium’s constellation of Low Earth Orbit satellites. With this network, you can set up to 2,250,000 square kilometer... Read more
ICOM IC-T10 – Released April 2022. What are its Main Features
A first look at the new Icom IC-T10. Dual Band Transceiver ICOM IC-10 PDF File https://icomuk.co.uk/files/icom/PDF/newsFile/IC-T10_A4.pdf Read more
Icom ID-52 Quick Look And Highlights
My newest radio is the new ID-52 by Icom. I have had this a bit over a month and finally starting making videos on it, just to show you why I think th... Read more
Yaesu FTM-200DR Dual Band System Fusion Radio – FIRST LOOK!
Yaesu FTM-200DR “Join us for today’s lunchtime livestream as I welcome John Kruk from Yaesu back onto the channel to talk about the brand... Read more
Your Favorite HT Radio Antennas Transmit Tested & QuirkQRP ZipTenna!
HT Radio Antennas Transmit Tested Read more
CAS-10 CubeSat has an Amateur Radio Transponder
CAMSAT’s CAS-10 is an 8U CubeSat that will carry an Amateur Radio VHF to UHF linear transponder for SSB communications. A follow on mission from CAS-9... Read more
Review
uSDX+ v2 8 – HF TRANSCEIVER
uSDX Here we take a look at the uSDX+ Version 2 8 Band All mode HF Transceiver with Surprising Results! it is optimized fromuSDX QCX-SSB ope... Read more
Messi & Paoloni Is Better Than LMR Coax
“Yes, it sure is. Comparing the losses between Messi & Paoloni & LMR Coax cables. The numbers don’t lie in this heated battle betw... Read more
Ameco AC-1T Unboxing
Ameco was an old Ham Radio company that existed back in the 50s. Now it is being remade as a sort of modern, vintage radio with all the traditional tu... Read more
Uniden SDS100 Handheld Scanner, True I/Q Technology
“Today I’m taking a look and unboxing the Uniden SDS100 handheld scanner. Using True I/Q technology, it will pull in signals even in the w... Read more
Worldwide Ham Radio Operators (2000-2022)
Amateur Radio Operator numbers worldwide from data 2000 to 2022. This data has been collected from multiple data sources. Some records only go up to 2... Read more
Best HF Ham Radio for POTA 2022 – Parks On The Air, Portable Radio
Here is my list of the top 10 HF Ham Radios for portable operations and POTA – Parks On the Air. Read more
Hoarding Handheld Radio Batteries & Connecting Radios To Power
“How do we actually connect our radios to a power source? Also, should we have more than one handheld radio battery? Should we go a step further... Read more
Equipment
Antenna Genius
Did you know that Antenna Genius can be combined into a super switch matrix, expanding on the number of either antenna ports or the number of radios?... Read more
mercuryAT available in the next few days
List Price $795.00 km3km.com Read more
CatMeters for new Yaesu transceivers
CatMeters for new Yaesu transceivers For FT-450, FT-950, FT-991, FT-2000, FT-DX10, FT-DX101,FT-DX1200, FT-DX3000, FT-DX5000, FT-DX9000 Instantly... Read more
Italab – HF amplifier + 6 meters – 2KW
New HF amplifier 1,8 - 30 MHz -50-54 MHz, output power 2000 W (1800 to 50 MHz) Large TOUCH SCREEN display (7 "), 3 individually selectable antenna out... Read more
ICOM IC-705 FULL POWER With The ANKER 521 Power Station
ICOM IC-705 FULL POWER With The ANKER 521 Power Station Check out Anker 521 Portable Power Station Read more
Malachite V4 SDR DSP Radio Receiver 50KHz – 2GHZ
50KHz-2GHZ V4 Malachite SDR DSP SDR Radio Receiver AM/SSB/NFM/WFM Shortwave Radio with Speaker Expansion Module “Here we take a look at another... Read more
Monitor Station Lextel MS-2000
Lextel MS-2000 is an RF Transmitter Station Monitor which analyzes auxiliary devices and antenna characteristics as well as the source that powers the... Read more
Antenna
DIAMOND HF MOBILE “CL” SERIES ANTENNAS
The Diamond HF Mobile “CL” Series Antennas are a bit special. Centre Loafing is claomed to be superior to base loafing. Peter G3OJV, tests... Read more
Diamond D3000N Super Discone Ultra-Wideband Antenna
“In this video we cover the assembly, installation and testing of the 3000N Discone for use on an SDR and home scanner.” Ultra-wideband de... Read more
This Is Not A Tree – Disguised Radio Transmitter Towers
Disguised Radio Transmitter Towers Read more
How to Read an SWR Curve
“It’s impportant we understand where an antenna tunes and what is the 1.5:1 bandwidth, particularly for Amplifier users and those without... Read more
Tuning an Antenna without an Analyzer
“Lee, KD9SWA, wants to know how to tune his antenna without an analyzer as he does not have one right now. He has an SWR meter and some good met... Read more
Second Rule of Antennas : Height Matters!
Sergei, UB4LDT, has some questions having to do with the height of his antenna? But the basic rule is height matters! Read more
The Amazing Delta Loop Antenna
“Let’s have a play with Delta Loops. Horizontal, Vertical and Sky-Loop style. Fascinating stuff. Callum” Read more
