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
Ham Radio vs GMRS
Ham Radio vs GMRS – Ham Radio compared to GMRS frequencies and modes – which ones is better? Today let’s talk about both of them, ho... Read more
Best GMRS Handheld Radio 2021 – GMRS Radio Comparison
Best GMRS Handheld Radio 2021 – GMRS Radio Comparison Read more
New Arrival! Dual Mode Portable Repeater RT97P
Dual Mode Portable Repeater RT97P will come. It is similar to the portable repeater RT97. Now we have the RT97 GMRS band, and this RT97P is the d... Read more
ARISS and Partners Are Investigating Space Station Ham Radio Failure
Amateur Radio on the International Space Station (ARISS) and its partners are troubleshooting a failure within the on-board NA1SS amateur station in t... Read more
CHESS CubeSat Constellation to Carry FUNcube Transponders
In 2020, a project between AMSAT-UK, AMSAT-NL, and Swiss universities got under way with the aim of equipping two Swiss satellites — for now under the... Read more
The First Thing To Upgrade On Your Handheld Ham Radio
It’s true that the best thing to upgrade on your ham radio handheld is its antenna. However, there is something you should do before making that anten... Read more
AMSAT/Vanderbilt RadFXSat-2/Fox 1E Set to Launch
Virgin Orbit’s LauncherOne is a go for launch on Wednesday, January 13, at 1500 UTC, carrying the AMSAT/Vanderbilt RadFXSat-2/Fox-1E CubeSat into spac... Read more
Review
Baofeng UV-9R TP 18-watt Power Testing | UV9R Plus HT
Baofeng UV-9R TP 18-watt HT Ham Radio Unboxing and power testing – let’s see if this 18-watt HT does what it is advertised to do! Read more
ACOM – Manufacturers Showcase
ACOM team to discuss the latest amplifier technology. Tune in and ask the team questions. Read more
Ham Radio vs CB
Ham Radio vs CB, Citizen’s Band Radio – Ham Radio compared to CB frequencies and modes – which ones is better? Today let’s tal... Read more
Ham Radio Forms a Planet-Sized Space Weather Sensor Network
The article “Ham Radio Forms a Planet-Sized Space Weather Sensor Network,” appeared on February 9 in Eos, Earth & Space Science News — an American... Read more
SCU-LAN10 with FTdx101 / FTdx10 Overview
SCU-LAN10 with FTdx101 / FTdx10 Overview Read more
RFI NOISELOOP Portable Receive Antenna
RFI NOISELOOP Portable Receive Antenna Read more
An Aircraft Tale That Applies to Ham Radio
An Aircraft Tale That Applies to Ham Radio Read more
Equipment
$760 Ham Radio Shack From Aliexpress?
$760 Ham Radio Shack From Aliexpress? Read more
Radioddity Raddy RW3 Go-Kit-Type Radio AM/FM/WX, Phone Charger and More
Radioddity Raddy RW3 Go-Kit-Type Radio AM/FM/WX, Phone Charger and More [Small Size But All-Purpose] Unlike other FM/AM/NOAA radios, the RW3 is a Blue... Read more
PANADAPTER For Any Radio DC – 160 MHz SDR Antenna Switch
PANADAPTER For Any Radio DC – 160 MHz SDR Antenna Switch Read more
Yaesu M-70 | Desktop Microphone
The Yaesu M-70 is a new desk top microphone from Yaesu, it is ideal for the new FT-DX10 model but will function with other Yaesu Models. More info so... Read more
New! Wattmeter HF/50 MHz FX773 3/5 kWatt
Technical Features VECTOR SWR/POWER METER METROPWR FX773Coverage 1.8/55 MHz 160/6mtHF/55MHz Measure Power AVG, PeP, dBm, R, Z, |X| , SWR, FrequencyWid... Read more
PA500 ultra-compact RF amplifier with tuner
PA500 linear amplifier with integrated automatic antenna tuner for your next adventure.The complete solution to conquer limitations unique form-factor... Read more
Yaesu FTdx3000 Discontinued
In recent news, Yaesu announced they have discontinued production of the FTdx3000 and FTdx5000 HF amateur transceivers. In our livestream excerpt we t... Read more
Antenna
Another Difficult Antenna Situation
Tim, W4FTP, asks how he can use some tall but skinny trees along the back of his property as part of his antenna system. We take a look, and your comm... Read more
Ham Radio experiment – End fed half wave antenna sloper vs flat horizontal orientation
https://youtu.be/BgEtQOS8mY0 Read more
British Columbia Radio Amateur Copies Signal from Mars-Orbiting Satellite
As reported on Spaceweather.com, Canadian radio amateur Scott Tilley, VE7TIL, has snagged another signal from deep space. His latest conquest has been... Read more
Wideband Desktop Discone Antenna – 25 MHZ – 2000 MHz Coverage
“Here we take a look at the Skyscan Desktop antenna with a rated frequency range of between 25 Mhz up to 2 Ghz. We test the antenna indoor and o... Read more
Where Can I Put My HF Antenna?
Where Can I Put My HF Antenna? Read more
Wolf River Coil Take It Along With Chameleon SS17 Ham Radio Antenna Whip
Lets talk about my thoughts on the Wolf River Coils Take It Along 1000 and what its like adding a Chameleon Cha-SS17 whip. Read more
Why Won’t My 80-Meter Dipole Cover the Whole Band?
Why Won’t My 80-Meter Dipole Cover the Whole Band? Read more
