Podcasts about 3db

This show has been flagged as Clean by the host. Power Measurement and Antenna Gain HPR show by Paulj, May 2025. 1.0 Power expressed in dB (also written as dBW) Power PdB = 10 . log10P Where P is the power expressed in Watts. 2.0 Power expressed in dBm Power PdB = 10 . log10P Where P is the power expressed in milliwatts. 1W = 1000mW Power PdBm = 10 . log101000mW Power PdBm = 30 dBm so: 0 dB = 30 dBm 3.0 Power expressed relative to an isotropic antenna - dBi An Isotropic antenna is an theoretical ideal antenna which radiates equally in all directions. Imagine the antenna is at the centre of a sphere, the signal strength at the surface of the sphere is equal at all points. The gain of an isotropic antenna is defined as 1, meaning: 10 dB = 10 dBi 4.0 Power expressed relative to a half wave dipole antenna - dBd The simplest practical antenna is a half wave dipole antenna, where each of the two legs is a quarter wave length long. The feed is at the centre, and the two legs are generally horizontal, and aligned away from the feed point 180 degrees apart. The dipole antenna exhibits gain perpendicular to the legs. The maximum gain is 1.64 times the isotropic antenna - a gain of approximately 2.15dBi. The gain off the ends of the dipole is much lower - the total power radiated by the antenna can not exceed the power being input, so if there is more radiation (gain) in one direction, there must be a corresponding reduction in a different direction. So: 2.15 dBi = 0 dBd 5.0 Effective Radiated Power - ERP and EIRP ERP and EIRP are both used to indicate the power achieved using an antenna.ERP compares the antenna performance with a dipole, and EIRP compares the performance with an isotropic antenna. So, the ERP is the power which would need to be fed into a dipole antenna, to get the same effect in the direction your antenna is pointing. EIRP is the power required for an isotropic antenna to gain equivalence. Practical example: My KX3 can transmit 15W. using the formula above, this is 11.77 dB. If I attach a Yagi-Uda antenna with a gain of 10dB, the ERP is 21.77 dB. Using the formula above, from this number you can calculate that this is the equivalent of 150.3142 Watts ERP. To understand the EIRP, we need to add 2.15 to the 21.77 dB value, giving 23.92 dB EIRP. Again, converting to actual power gives 246.515 Watts EIRP. If you are comparing antennas, make sure the same units are being used in all cases (either EIRP or ERP) - some sellers will use EIRP, because the values are higher! Check your licence conditions. Power output limits are often at the antenna, and don't include antenna gain. You can set your transmitter to output sufficient power to overcome any feed line losses, and present up to the power permitted to the antenna. A good antenna can then be used to get the transmitted power out and across the world. For feedline loses, the value is given in dB per 10 metres. For example, RG58 is 2dB / 10 metres (at 100MHz - choose the right feeder coax for your target frequency!). If you have 15 metres, then you will have 3 dB feeder loss, so half of your transmitter power will be lost in the feed line. If you know this and your transmitter can output more, then you can increase the transmitter power accordingly. So for 25W at the transmitter, with 3dB loss in the feeder, you can set the output to 50W. Some transmit power limits are set in ERP or EIRP, so you will need to calculate back from the antenna to see the maximum allowable transmitter power, to stay within the rules. 6.0 Combining values One result of the use of dB is that you can add the values together to understand the whole system gain. So, with our example above, if we have 11.77 dB of output power, then -1 dB insertion loss for a bandpass filter, -3 dB loss for the feeder, and 5dB gain on the antenna, the overall ERP is 12.77 dB. You can convert this back to Watts, to get 18.92W ERP. 7.0 Links Dipole information Yagi-Uda information Wikipedia information on Decibels Wikipedia information on ERP and EIRP Wikipedia information on Antenna Gain ERP & EIRP calculator from M0UKD Provide feedback on this episode.

Heather Judith Horwood was born in 1941 and grew up in Mont Albert, Victoria, Australia. She joined Swallows Juniors on radio 3DB at age eight. She appeared in pantomimes at the Tivoli Theatre during her Christmas holidays in 1956, 1957 and 1958. Heather appeared with fellow Swallows Juniors alumni Ernie Sigley and Gaynor Bunning on Teenage Mailbag on HSV7 in 1957 and moved into adult variety programs on HSV7 and ABV2. Hear the Remember When Legends interviews live each Sunday on 3AW at 9pm or catch up weekly here.See omnystudio.com/listener for privacy information.

Award-winning harpist Ashley Jackson, whose expressive work melds traditional classical music with the rich heritage of Black spirituality, has a new album on the horizon — Take Me To The Water (out March 21).  In her masterful dip into transformative and spiritual power of water, Jackson interprets work by Alice Coltrane, Claude Debussy, and — on Today’s Top Tune “Deep River II” — the work of Samuel Coleridge-Taylor. 

Amy Millan is a Star, literally, she’s a member of the beloved  Montreal indie-pop group Stars. She’s also a satellite member of the iconic Broken Social Scene collective. But the song you’re about to hear, “Wire Walks,” is from her first solo release in fifteen years — I Went To Find You. Diving deep into her past, Millan taps into one of her favorite memories with her father, whom she enjoyed singing with in the evenings before his tragic death when she was five. 

Melbourne-based collective Surprise Chef are busy cooking up their new album Superb.It’s slotted for release mid-May, but we are here to share the song “Fare Evader” — a creamy drum-heavy beat that’s guaranteed to shake, rattle, and roll your speakers. 

Nigeria-born, UK-based Obongjayer reflects on a surprising theme which you wouldn't guess when you hear the beat of “Just My Luck.” 

Brooklyn-based Alsarah & the Nubatones were formed out of many conversations around modern migration and the cultural exchanges between Sudan and Egypt (plus a common love of the pentatonic scale). Their third full studio album Seasons of the Road has been five years in the making and marked by perilous milestones. “Bye Bye” is one of the first songs they’ve written in English — a break up song written in the tradition of the blues. 

One night, Canadian artist Leif Vollebekk dreamt that Jeff Buckley taught him a song in a Manhattan rehearsal space. Vollebekk watched Buckley’s hand on the fretboard of his guitar as he followed along. Vollebekk felt like he was in heaven, as their falsettos rang out. When he woke up, he wondered which Buckley song that might have been. He quickly realized that it was “Rock and Roll,” his own new song. 

Belgian outfit Black Flower has created a song around the parable of the monkey. It is said that a trap is set in a hole in a tree and hidden within is an enticing prize for the primate. The monkey takes it, but as danger approaches he refuses to let go and gets his fist stuck in the hole. The monkey finds himself in a bind, trapped by clinging to desires that hold us back. “Monkey System,” which features Ethio-Belgian troubadour Meskerem Mees, helps us learn an important lesson. 

If you can believe it, it’s Friday once again! To celebrate the end of a tough month, let’s turn to revered British trio Jungle who set our hearts ablaze with “Keep Me Satisfied.” Nuff said. 

What the world needs now is a little love and goodwill and that’s what you’ll hear when you spin Montreal-based Yves Jarvis’ new driving song “All Cylinders.” We believe you’ll find it to be in the style and warmth of Dionne Warwick and Burt Bacharach. 

Let’s tap into the work of composer, producer, and multi-instrumentalist Serebii (aka Callum Mower) — a talented, jazzy crooner based in New Zealand. Here’s “Verrans Corner,” which AI says is a location in Auckland that includes character shops.   

808s stay bumpin’ to the bone when LA artist, DJ, and producer TOKiMONSTA turns her attention to music making. With  new album Eternal Reverie slated to drop on March 7,let’s spin the slick sound of “Feel It (Feat. grouptherapy.).” 

Afrobeat superstar Seun Kuti teams up with Zambian singer, rapper, and songwriter Sampa the Great. Dedicated to uniting a panoply of voices across the African diaspora, Kuti lights up the airwaves with the powerful  “Emi Aluta (Zamrock remix).” 

You’ll recognize the voice within the first few notes…  It’s the signature sound of Little Dragon’s celebrated vocalist Yukimi, and there will be more to enjoy as she puts the finishing touches on her solo album debut For You (set for release on March 28). We share “Winter Is Not Dead,” inspired by Scandinavia’s long, dark winters. Yukimi states what it's like to live there: “The lack of light brings many of us down. At the same time, underground, life thrives. Microbes stay busy breaking down organic matter, recycling nutrients and improving the soil, quietly preparing for spring. I also grow during my personal winter seasons, even though things might feel dead on the surface. Wheels turn as I transform and move through it getting ready for spring and summer.”

Rapper, actor, and film-director Dear Derrick’s new film The Black Sea features an accompanying soundtrack of the same name. It’s an homage to the golden era of hip-hop and offers reflections on his own upbringing in Brooklyn. “Ven Aqui (feat. Dario),” is an anthemic love song in Spanglish.   

One of LA’s finest multi-instrumentalists Charlie Bereal is back with his latest song, “Hope.” It was originally written as a tribute to the great Martin Luther King, Jr. on his birthday. Now the song has added meaning for Charlie, who shares: “Being a Pasadena/Altadena Native and watching my family churches, homes, and businesses burn has been completely devastating for me and our community. But one thing I know is that my city is strong, and we’re finding hope.”

Thai-born, Canada-based drummer, producer, and composer Salin gifts us with an edgy mix that conjoins the sound of her native homeland with 70’s psychedelia from West Africa. The track is called “Puaj,” which is Thai for the indigenous bamboo jew’s harp that provides such a heady mix. “Each note tells a story, echoing the lives and experiences of those who play it,” says Salin. “It’s a reminder that music is a universal language, transcending borders and uniting us all in a shared experience of joy and creativity.”

After a couple grueling years touring around the country for their debut album Shadowglow,  powerhouse indie rock band flipturn will soon release their sophomore album Burnout Days (early reviews have been raves). Tucked away in a cabin in the North Carolina mountains, the band wrestled with exhaustion to gain their endurance and envisioned an immersive world only they could create. Visit that world now through this shiner of a song, “Rodeo Clown.”

It’s Monday and who doesn’t like starting their week with a banger?! That’s why we’re so happy to share the first new music in several years from singer, songwriter, and dang-good pianist Neal Francis. His latest is the dance-ready track “Back It Up.” Let’s get laced-up, friends. 

In 2020, Laura Marling released Song For Our Daughter, a collection of music dedicated to a daughter that didn’t yet exist. The album she’s released now, Patterns in Repeat, was written after her actual kiddo was born and it mirrors the patterns at play when it comes to family. Check out “Child of Mine.” 

Slowly but surely, O & The Mo, are teasing out tracks from their forthcoming album, Make Way For The Sun (set to drop in late January, 2025). Recorded in their home studio in the pastoral valley of Wakapuaka, New Zealand,  “The High” captures their signature sounds as they emanate from a handmade nikau palm guitar. 

Let’s turn now to a band that you might not be aware of. Trupa Trupa is a post-punk band from Gdańsk, Poland, known for their unique blend of brooding alternative rock and psychedelic influences. Dark, dense, and full of mystery — “Sister Ray” recalls the beat of the 1980s in the best way possible.   

British-born, Stockholm-based poet and musician Joshua Idehen makes magic by intertwining both mediums. On “Mum Does The Washing,” Idehen dissects world theories via a simple-yet-meaningful analogy that will make you laugh (and think). And be sure to check out his cover of Talking Heads’ “Once In A Lifetime.”  

It’s crazy to think that the postmodern, post-punk, post-human collective known as The Mekons are celebrating roughly 50 years together. These rebellious souls are still doing their thing, challenging and entertaining us at the same time. “You’re Not Singing Anymore” will find you ruminating on their acidic wit and most likely singing along to the chorus. 

Columbian artist Ela Minus will soon unveil her sophomore album DIA (translating to “day” in English). It will arrive almost five years after the release of her debut album acts of rebellion. Cast as an electronic venture intertwining the singer-songwriter’s personal reflections and written in numerous inspirational locations, we catch a glimpse of the future with the song “Broken.”

For “Silver Bullet,” The South Hill Experiment employed pitched seismometer waves and twelve-story-stairwell tracked vocals alongside their guitars to provide a sense of scale. You may not be aware of the layering you are hearing because the lyrics provide a mantra you might find yourself repeating: “I think I’m getting older/I think I’m getting over it.” And that seems to be their intention. 

As we await the arrival of Franz Ferdinand’s new studio recording The Human Fear – slated for release in early 2025 – we wind back the clock to 2004. At that time the Scottish band was just breaking through in the U.S. and they chose to make their radio debut on Morning Becomes Eclectic.  

SoCal musical polymath Cameron Lew has an alluring way of pulling you inside his work as Ginger Root. His homespun sound, informed by his Asian-American roots, also leans into his love of music from the ‘70s and ‘80s: from Japanese and French pop, to Philly soul.  The title of his third album SHINBANGUMI translates from Japanese to ‘a new season of a show,’ and it features a very appropriate track for today — “Better Than Monday.” 

Mapache songwriter, producer, and multi-instrumentalist Sam Blasucci swerves into his love of Motown as you’ll hear on the song “Flower.” You can find the track on Blasucci’s sophomore solo album Real Life — a place where he navigates new sonic territory.   

We’ve got a beast of a track to share today by New Zealanders Lips. It’s called “The Wolf” and it features the sinister sound of E from EELS. We’ll let the band explain.  “E had heard us on KCRW in LA, and reached out on Instagram,” recalls Lip Fen Ikner. “[It was] right around the time we had this track on the boil and were looking for a cool way to end it." "I’ve been an Eels fan for the longest time, and was truly honored to hear from him. I still can’t believe he was nice enough to go along with our nonsense.”  

A child of Los Angeles, Ariella has been nurturing her creativity and fine tuning her songwriting since early on. This indie folk artist recently released her debut album Crybaby. From it, we share “Call Me Your Angel.” 

We’re excited by the prospect of a new album by Sharon Van Etten, but this one is a little different. The self-titled LP (due Feb. 7, 2025)  will be the debut of her collaborative work with her band The Attachment Theory — adding a new dimension to the sound and songwriting. “For the first time in my life I asked the band if we could just jam,” Van Etten muses. “Words that have never come out of my mouth, ever! But I loved all the sounds we were getting. I was curious. What would happen?” Magic, apparently. Van Etten went on to share that two tracks from the forthcoming album were written within the span of an hour through this process. We’ll have to wait to hear those, but we can all enjoy “Afterlife” right now. It’s a good preview of what’s to come with its weighty message boosted by a rapturous melody. 

It’s been roughly twenty years since London-based Tunng crept onto the scene with their genre-defying and timeless “pagan folktronica” debut album — This Is… Tunng: Mothers Daughters and other Tales. To celebrate, the band will release their eighth studio album Love You All Over Again on Jan. 24, 2025 via Full Time Hobby. It’s a record brimming with crunchy textures, nods to renaissance folk, and (maybe) a dash of Simon & Garfunkel. Enjoy this first foray into the LP — “Didn’t Know Why.”

Ry Cuming, best known as RY X, was working on the song “You” when he realized he kept hearing ghostly smidgens of Hermanos Gutiérrez. But that audio imagery was only in his mind until he reached out to share the song with them. The duo loved what they heard and lept at the chance to collaborate, they even made the trek to Cuming’s Topanga Canyon studio to record. 

“Garmonbozia” is the first single from audio pioneer Flying Lotus since 2022, but don’t think he hasn’t been busy since then. Recently, Steven D. Bingley-Ellison (or FlyLo) has expanded his palette by co-writing, directing, and scoring for the horror anthology V/H/S 99 as well as other ghoulish flicks.  This Twin Peaks inspired track follows a similarly spooky path, sounding as though it’s coated in a viscous syrup with the bassline dripping into a steady beat. P.S. We wish FlyLo a very happy birthday today. 

Jeremie Albino will release his debut album on Nov. 1 via Dan Auerbach’s Easy Eye Sound. He’s the latest artist to sign with the prestigious label. The album’s title track, “Our Time In The Sun,” showcases an emotionally nuanced narrator pouring his soul into his music. Albino’s story began on a farm in rural Ontario. After wrangling vegetables at farmers markets in Toronto, he began busking on the city’s sidewalks before sharing stages with artists like Orville Peck, St. Paul & The Broken Bones, and JD McPherson (to name a few). 

West London-based singer-songwriter Nilüfer Yanya has been receiving well-deserved praise for her new full-length, My Method Actor, an organic and intimate recording. 

Ascending Australian nobility Royel Otis released a fantastic debut album earlier this year — PRATTS & PAIN. This week will give us a deluxe vinyl release of that very record. One of the many tracks we’ve enjoyed sharing is “Velvet,” a powerful and potent 2 minute song. Memorize it now, you will want to shout the lyrics along with them when they make their Morning Becomes Eclectic debut live on Oct. 15. 

Singer-songwriter Daniel Blake followed his heart, literally. As his girlfriend made a move to SoCal from Arizona, Blake came along and began working in construction… thinking he was leaving his musical pursuits behind. But he enjoyed the work, and the long drives provided ample time for melodies to develop and for songs to begin to write themselves. “Dreaming About It” is one of those songs and you’ll likely hear it as he and his full band kick-start School Night at Bardot for the very first show of the season(!).

On the album Tension, Ethiopian jazz pioneer Mulatu Astatke settles in with Tel Aviv’s Afro-funk collective the Hoodna Orchestra for seven original compositions that pay tribute to the maestro’s sound. Majestic-yet-gritty, “Major” sounds like a timeless piece swinging out of your speakers.   

Jerry Paper has collaborated with a bunch of artists we love including Weyes Blood and Tyler, The Creator. But after experiencing therapy and the radical growth that came out of it, their namesake Lucas Nathan decided they wanted to be a therapist.  “Everything Angel” is about that decision. Nathan says: “When I was in my early 20s I told myself that my only skill was music so I had to figure out how to make it work as a career. I spent the past almost-decade actualizing that, without seeing that I’d closed so many doors for my understanding of myself. So this song is about knowing that my life can expand beyond what I told myself it was when I was younger, and that unknowing is the stance to take towards any big journey.”

Recorded at their home studio in Los Angeles, New Release is the first studio album from YACHT (Young Americans Challenging High Technology) in five years. The title is funny, appropriate, and on-brand because (in addition to being a literal new music release) it also serves as a personal release due to the fact that it’s the first album they’ve dispensed on their own label, Paris by Night. “Wake Me Up” sounds like they need a nudge from their nap and is the last song on the album.   

You can hear the essence of  great jazz vocalists like Carmen McRae, Nina Simone, and Sarah Vaughan in the sound of NYC’s Afro-Boricuan group duendita. 

Inglewood-based Jean Dawson straddles multiple cultures and gives voice to fans who see themselves in his work. His distinctive sound has been noticed by artists like SZA and A$AP Rocky. Another notable collaborator is Lil Yachty, who you’ll hear on the track “Die For Me,” which will be featured on Dawson’s forthcoming album Glimmer of God out in October. 

Melbourne’s Bananagun play their music in an unfettered, unrestrained, and bold way — harnessing the energy that abounds around them. Complex and beautiful, we share “Free Energy.” 

When introducing multi-instrumentalist Nate Mercereau from the stage every night on his New Blue Sun live tour,  André 3000 would say: "I call him a Magician, he plays guitar, but it almost never sounds like a guitar.” This statement can easily be applied to Mercereau’s forthcoming album Excellent Traveller, a sonic journal where everything you hear has come through the guitar — a palette of recordings made either live or in the studio — with Nate’s fingerprints all over.

Year of the Banana is art-pop duo Rubblebucket’s seventh studio album coming down the pike in mid-October. Today, we’re sharing the hip-moving, calorie-burning fun early single they call  “Moving Without Touching.” 

Afro-Appalachian folk artist Mon Rovîa wrote the song “crooked the road.” as a reminder to make a clear distinction between pain and his own identity. I was in love with my suffering, it became who I knew myself as,” explains Mon Rovîa. “Because of this I couldn’t see the hands that had been extended to lift me out. Ones that were longing to see me become who I was meant to be. For the listener I hope they find freedom, I hope they find strength to pull away from what brings [them] down. The song is for all of us who thought in our darkest moments, ‘this is who I am’.”

While working in the studio and writing new music, Lucius started discussing the loops they get stuck in, the rabbit holes the mind goes down, and the voices (usually not their own) that reaffirm where they fall short. They leaned into that theme, but wanted the track to have drive and uplift us so they turned to their friend Adam Granduciel (The War on Drugs) to rev up the song “Old Tape.”