SKU: 29793484358

raspberry pi 5 rtl sdr v4 bundle

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Description

raspberry pi 5 rtl sdr v4 bundleProgrammeer en bouw op Raspberry Pi gebaseerde hulpprogramma's, tools en instrumenten voor hamstations Met de verbeterde RTL SDR V4 kunt u radiosignalen ontvangen tussen 500 kHz en 1,75 GHz van stations die verschillende banden gebruiken, waaronder MW SW LW uitzendingen, hamradio, nutsvoorzieningen, luchtverkeersleiding, PMR, SRD, ISM, CB, weersatelliet en radioastronomie. Het boek Raspberry Pi 5 for Radio Amateurs geeft uitgebreide dekking voor het

Programmeer en bouw op Raspberry Pi-gebaseerde hulpprogramma's, tools en instrumenten voor hamstations

Met de verbeterde RTL-SDR V4 kunt u radiosignalen ontvangen tussen 500 kHz en 1,75 GHz van stations die verschillende banden gebruiken, waaronder MW/SW/LW-uitzendingen, hamradio, nutsvoorzieningen, luchtverkeersleiding, PMR, SRD, ISM, CB, weersatelliet en radioastronomie.

Het boek Raspberry Pi 5 for Radio Amateurs geeft uitgebreide dekking voor het inzetten van de RTL-SDR-kit via het gebruik van een Raspberry Pi 5.

Deze bundel bevat:

RTL-SDR V4 (Software Defined Radio) met Dipole Antenne Kit

De RTL-SDR is een betaalbare dongle die kan worden gebruikt als een computer-ondersteunde radioscanner voor het ontvangen van live radiosignalen tussen 500 kHz en 1,75 GHz bij u in de buurt.

Deze RTL-SDR V4 heeft verschillende verbeteringen waaronder het gebruik van de R828D tunerchip, een triplex ingangsfilter, een notchfilter, verbeterde componenttoleranties, een 1 PPM temperatuur-gecompenseerde oscillator (TCXO), een SMA F-connector, aluminium behuizing met passieve koeling, bias T-circuit, verbeterde voeding en een ingebouwde HF upconverter.

RTL-SDR V4 wordt geleverd met een draagbare dipool antennekit. Het is een geweldig apparaat voor beginners omdat hij terrestrial en satellietontvangst mogelijk maakt, gemakkelijk buitenshuis kan worden gemonteerd, en geschikt is voor draagbaar en tijdelijk gebruik onderweg.

Kenmerken

  • Verbeterde HF-ontvangst: De V4 maakt gebruik van een ingebouwde upconverter in plaats van een direct sampling circuit. Dit betekent dat er geen gebruik meer hoeft te worden gemaakt wordt van de Nyquist-frequentie van rond de 14,4 MHz, wat een verbeterde gevoeligheid en een instelbare versterking op HF mogelijk maakt. Net als bij de V3 blijft het laagste afstembereik 500 kHz en kan bij een zeer sterk ontvangstsignaal nog steeds front-end verzwakking/filtering nodig zijn.
  • Verbeterde filtering: De V4 maakt gebruik van de R828D tunerchip die drie ingangen heeft. De SMA ingang is drievoudig uitgevoerd voor 3 banden: HF, VHF en UHF. Dit zorgt voor enige isolatie tussen de 3 banden, wat betekent dat out-of-band interferentie van sterke zenders minder snel verminderde gevoeligheid of spiegelsignalen kan veroorzaken.
  • Verbeterde filtering x2: Naast de triplex ingang kan ook de open drain pin op de R828D worden gebruikt. Hierop kunnen eenvoudige notch-filters worden aangesloten voor bekende banden qua interferentie, zoals de AM en FM omroepbanden en de DAB-banden. Deze dempen slechts met een paar dB maar kunnen nog steeds van nut zijn.
  • Verminderde faseruis op sterke signalen: Door een verbeterd ontwerp van de voeding is de faseruis als gevolg van ruis uit de voeding aanzienlijk verminderd.
  • Minder warmte: Een ander voordeel van de verbeterde voeding is een lager stroomverbruik en minder warmteontwikkeling in vergelijking met de V3.

Inbegrepen

  • 1x RTL-SDR V4-dongle (R828D RTL2832U 1PPM TCXO SMA)
  • 2x 23 cm tot 1 m telescoop antenne
  • 2x 5 cm tot 13 cm telescoop antenne
  • 1x Dipool antennevoet met 60 cm RG174
  • 1x 3 m RG174 verlengkabel
  • 1x Flexibele statiefbevestiging
  • 1x Zuignapbevestiging

Downloads

Boek: Raspberry Pi 5 for Radio Amateurs

De RTL-SDR-apparaten (V3 en V4) hebben aan populariteit gewonnen onder radioamateurs vanwege hun zeer lage kosten en uitgebreide mogelijkheden. Een basissysteem kan bestaan uit een USB-gebaseerd RTL-SDR apparaat (dongle) met een geschikte antenne, een Raspberry Pi 5 computer, een USB-gebaseerde externe audio input-output adapter en software geïnstalleerd op de Raspberry Pi 5 computer. Met zo'n bescheiden opstelling is het mogelijk signalen te ontvangen van ongeveer 24 MHz tot meer dan 1,7 GHz.

Dit boek is bedoeld voor liefhebbers van radioamateurs en studenten elektrotechniek, maar ook voor iedereen die de Raspberry Pi 5 wil leren gebruiken om elektronische projecten te bouwen. Het boek is geschikt voor zowel beginners als ervaren lezers. Enige kennis van de programmeertaal Python is vereist om de projecten in het boek te begrijpen en eventueel aan te passen. Voor elk project wordt een blokschema, een schakelschema en een complete programmatabel in Python gegeven, naast een uitgebreide beschrijving.

De volgende populaire RTL-SDR-programma's worden in detail besproken, geholpen door stap-voor-stap installatiegidsen voor praktisch gebruik op een Raspberry Pi 5:

  • SimpleFM
  • GQRX
  • SDR++
  • CubicSDR
  • RTL-SDR Server
  • Dump1090
  • FLDIGI
  • Quick
  • RTL_433
  • aldo
  • xcwcp
  • GPredict
  • TWCLOCK
  • CQRLOG
  • klog
  • Morse2Ascii
  • PyQSO
  • Welle.io
  • Ham Clock
  • CHIRP
  • xastir
  • qsstv
  • flrig
  • XyGrib
  • FreeDV
  • Qtel (EchoLink)
  • XDX (DX-Cluster)
  • WSJT-X

De toepassing van de programmeertaal Python op het nieuwste Raspberry Pi 5-platform sluit uit dat de programma's in het boek werken op oudere versies van Raspberry Pi-computers.


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4.8 ★★★★★
Based on 12 reviews
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Verified Purchase
Neal
Birmingham, US
★★★★★ 5
Wonderful pillow and products!
Color: White, Size: Body
I've been using the Snuggle-Pedic pillow for a couple of weeks now, and it is fantastic. It's soft, but the foam is firm and full. It is clearly extremely well made. Everything from Snuggle-Pedic appears to be top quality, right down to the extra little instructional inserts they include with their products. I also purchased the Zipper Removable Cover to make laundering easier. It's just as well made as the pillow. In fact, it's exactly the same as the cover on the pillow except removable due to the zipper. I'm also using the Snuggle-Pedic Organic Cotton Pillow Case, and it too is extremely well made, soft and comfortable. I was a little hesitant about the pillow case when I saw the picture because it almost looked ... too soft for me, sort of like a fleece blanket. Maybe that was just the way I saw the picture, but it's not actually like fleece. It's very soft and comfortable and does stretch a little as opposed to a regular pillow case, as they say in the description, but in a good way and appears very durable. I was concerned that it would stretch out and twist around the pillow, but it doesn't do that at all. It has stayed perfectly fitted to the pillow. From what I've experienced, everything in the descriptions of the Snuggle-Pedic products is true, and all three pieces work perfectly for me. This is the most I've spent on an individual pillow, but I couldn't be more pleased, and I'm planning to replace all my pillows.
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Reviewed in the United States on August 16, 2016
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Verified Purchase
Derek
Birmingham, US
★★★★★ 4
Cool Slumberings
Color: White, Size: Queen
For transparency, I was given this pillowcase to review by Relief Mart. However all views are my own and not biased because of it. I had recently purchased the matching pillow (see my other review) and had the opportunity to try this out. In terms of specs, it's basically made out of the same material as the Snuggle-Pedic Bamboo Shredded Memory Foam Pillow - it even has the same woven design. According to manufacturer claims: 'Soft and Luxurious Kool-Flow® Micro-Vented Bamboo Cover' - The pillowcase material is very soft to the touch, and does have a premium feel to it. It did have a slight 'smell' when it first arrived, however once washed (and air dried) it's not there anymore. 'Unprecedented breathability that allows air to circulate through the pillow' - It definitely keeps a certain 'coolness' and doesn't heat up if you stay in one spot. It makes staying still bearable, as I'm a sleeper always looking for the cooler side of the pillow during the night. As described, it's zippable so you can separately wash it from the pillow, and I can attest that it does keep it's softness and fluffliness after 3 weeks of use. Though I'm very happy with it, there's a couple things to build on in my opinion: - color and texture of fabric. By itself, the look of the pillow makes it seem that there's no pillowcase. So if you're picky about your bedsheets when you make your bed, this pillowcase will probably stick out like a sore thumb. The unsubtle branding and slight off white coloring doesn't help as well. - there's a tag outside the pillowcase near the zipper, and though it doesn't affect it in any way, it can be slightly annoying and aesthetically displeasing as it sticks out a bit. Would suggest placing it on the inside. I would definitely recommend this product, irrespective of the (minor) points above, as this has made my slumbering experience a whole lot better.
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Reviewed in the United States on June 16, 2016
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Verified Purchase
M.H.
West Palm Beach, US
★★★★★ 5
Great pillow case from a company that cares!
Color: White, Size: Body
The Snuggle-Pedic Body Pillow Case is GREAT and is the perfect pillow case for their body pillow! Feels exactly like the great material that's on the body pillow (soft and breathable) -- and it fits the pillow perfectly! I love that there's a zipper on it as I don't have to deal with the pillow slipping out of the case at all. The case fits perfectly and is the perfect case for the pillow! I read some other reviews where people said they didn't love that the tag/label was on the opposite side of the zipper on the case. But for me this was a non-issue. I cut the tag off and now there's no issue at all. :) Oh, and I have to give a shout out to Snuggle-Pedic and their company....they are awesome! They did offer me a free case in exchange for an honest review. But this isn't what I think they are awesome for. I find them to be a stand up company that is truly there to support their customers! They include a little note when you get the pillow and pillow case giving you their phone number and letting them know they are here to help if we have any questions. And they send an email as well saying they are available if we have any questions and they gave suggestions on how to care for their products. They are quick to respond and truly lovely people. I'm a sucker for supporting good companies....companies that actually truly care about their customers...and this company is that! I highly recommend this product :)
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Reviewed in the United States on June 2, 2016
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Verified Purchase
LanMcG
Lake Worth, US
★★★★★ 5
Excellent Customer Service and the Cover is Perfect
Color: White, Size: Queen
I have already purchased 2 of the pillows that go with the Snuggle-Pedic Zipper Removable Pillow Cover. Neither of the pillows I purchased had a zipper on the pillow cases. I bought my pillows at different times, the oldest pillow's case recently didn't do well in the laundry and got somewhat frayed. Not in too horrible condition, but I'm rather OCD. I admit I panicked a bit, I love my pillows! But then I discovered they sell the pillow cases with zippers that would allow me to replace my pillow case and not lose my awesome pillow. Perfect! I bought one. And, I am happy to say, that's just the beginning of my review. A day after purchasing the seller contacted me and explained how the pillow case worked. I was very pleased and grateful - glad I didn't have to struggle with it then rush back and beg for info. Nope, they had it all laid out and made it super easy. I got my pillow case, replaced my torn one and my Snuggle-Pedic pillow is good as new! Excellent service! Excellent Products! I highly recommend them. Oh, and if you haven't tried the Snuggle-Pedic Pillows you are seriously missing out! As a side sleeper, I couldn't live without mine now! Lanette
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Reviewed in the United States on November 9, 2018
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Verified Purchase
TamiP
Louisville, US
★★★★★ 5
Fits like a glove!
Color: White, Size: Queen
I recently had to buy new latex pillows because our old ones were beginning to shred after too many years. The old ones had a really nice cover on them that they came with and lasted as long as the pillows. The new queen size pillows came with a cover meant for a king-size and they were super thin and flimsy. The manufacturer tried to tell me it's so they could shrink in the wash. You can imagine the review I left! I looked at almost every cover Amazon had on the site and decided to bite the bullet and spend more on these. I'm really glad I did. They fit the pillows like a glove and keep the pillowcases from trying to slip off during the night because they're not slick. They're not sticky either and it is easy to put on the pillowcase. They are quite a bit thicker than any other cover I have ever had and do tend to change the density of the pillow just a bit because of it. I'm not having a problem with the change and it is very minor. I will absolutely buy this case again if the need should arise. I can't comment on the allergy stuff because we have latex pillows, to begin with so no allergens. I see people complaining about the zipper and just can't quite understand that but perhaps they changed it before I bought mine. I do have to recommend putting the zipper end into the pillowcase first to protect you from feeling a zipper at night but I do this with any protector not just this one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2019

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