Date
1 - 20 of 20
KerberosSDR #foxhunt #ksdr
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Who has setup a synchronous SDR with RPi and tracking app on Android? I have everything except the antennas and am working on loading it all up. Any help is appreciated. Thanks.
Mike McCafferty N5MMC
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Hi Mike,
I've not had good luck with the android app but the compass works well. I've used it for all the fox hunts I've participated in. I'm doing a presentation on it for the November "Show & Tell". Be there or be square! I think the Android app works best with continuous carriers, not intermittent signals like repeaters or foxes. Andrew and I were the only KSDR owners I was aware of so adding you makes three! Danny K5CG
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Would you like to come over and help me work on this? I was thinking an array of rubber ducks or something...
-- Mike McCafferty, P.E. N5MMC
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Sure! How is the weekend looking? In the meantime grab 4 mini magmount antennas Help the RWK when you shop at Amazon with Smile! Register here https://smile.amazon.com/ch/75-1575597 https://smile.amazon.com/ch/75-1575597 https://smile.amazon.com/ch/75-1575597
From: "Mike McCafferty, P.E." <mike.a.mccafferty@...> To: "main" <main@K5RWK.groups.io> Sent: Monday, October 28, 2019 9:49:45 PM Subject: Re: [k5rwk] KerberosSDR Would you like to come over and help me work on this? I was thinking an array of rubber ducks or something... -- Mike McCafferty, P.E. N5MMC
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John Di Filippo
Guys, I'm sure others in the RWK would be interested in this project so please consider documenting what you're doing (text/photos) and publish in the Chawed Rag or on our website. Thanks, John, AF5MN =====================
On Monday, October 28, 2019, 10:11:51 PM CDT, Danny K5CG via Groups.Io <k5cg@...> wrote:
Sure! How is the weekend looking? In the meantime grab 4 mini magmount antennas Help the RWK when you shop at Amazon with Smile! Register here https://smile.amazon.com/ch/75-1575597 https://smile.amazon.com/ch/75-1575597 https://smile.amazon.com/ch/75-1575597 From: "Mike McCafferty, P.E." <mike.a.mccafferty@...> To: "main" <main@K5RWK.groups.io> Sent: Monday, October 28, 2019 9:49:45 PM Subject: Re: [k5rwk] KerberosSDR Would you like to come over and help me work on this? I was thinking an array of rubber ducks or something... -- Mike McCafferty, P.E. N5MMC
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I have my kids but usually I am free... We can play it by ear or wait until next weekend.
-- Mike McCafferty, P.E. N5MMC
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Thanks to Danny, K5CG, for helping to get this ksdr up and running. It is working great. The unit stays on the car at highway+++ speeds.
-- Mike McCafferty, P.E. N5MMC
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Vania, Gi
Nice!
From: main@K5RWK.groups.io <main@K5RWK.groups.io>
On Behalf Of SUPERALPHA via Groups.Io
Sent: Monday, December 2, 2019 4:00 PM To: main@K5RWK.groups.io Subject: Re: [k5rwk] KerberosSDR
Thanks to Danny, K5CG, for helping to get this ksdr up and running. It is working great. The unit stays on the car at highway+++ speeds.
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Hi, I am thinking about getting the same equipment. It looks good. I am thinking about 3D printing a holder to make a mobile adcock antenna that has 4 vertical dipoles. I was also working on designing a doppler rdf which uses a RTL-SDR. I bought one, I just need to devise an antenna switching circuit and some software. I am very interested in learning more about the doppler shifts and perhaps use a Raspberry Pi with the single RTL-SDR. I know I can write the software, I just need to do a lot of research on the algorithms. Willie N8WP
On Mon, Oct 28, 2019 at 3:44 PM SUPERALPHA <mike.a.mccafferty@...> wrote: Who has setup a synchronous SDR with RPi and tracking app on Android? I have everything except the antennas and am working on loading it all up. Any help is appreciated. Thanks. --
Willie Peloquin N8WP Eschew obfuscation, espouse elucidation.
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Note, the antenna array shown above is for 70cm band. It has an inverted airfoil like a spoiler to keep it on the car at high speeds.
I am designing a new version that can extend easily for 2m operation. -- Mike McCafferty, P.E. N5MMC
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I know. I started looking at the RTL-SDR, it is a single SDR radio. The antenna switching is required. It is also about $25. I later learned about the Kerberos, which contains 4 RTL-SRDs. Willie
On Mon, Dec 2, 2019, 22:10 Danny K5CG via Groups.Io <k5cg=hamoperator.org@groups.io> wrote:
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Like a Formula 1/Indy car wing. It's all about the down force!
From: "Mike McCafferty, P.E." <mike.a.mccafferty@...> To: "main" <main@K5RWK.groups.io> Sent: Tuesday, December 3, 2019 2:47:35 AM Subject: Re: [k5rwk] KerberosSDR Note, the antenna array shown above is for 70cm band. It has an inverted airfoil like a spoiler to keep it on the car at high speeds. I am designing a new version that can extend easily for 2m operation. -- Mike McCafferty, P.E. N5MMC
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Is it 3D printed?
On Tue, Dec 3, 2019, 02:47 SUPERALPHA <mike.a.mccafferty@...> wrote: Note, the antenna array shown above is for 70cm band. It has an inverted airfoil like a spoiler to keep it on the car at high speeds.
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Yes
-- Mike McCafferty, P.E. N5MMC
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I have been thinking about 3D printing the parts necessary for an adcock antenna for 2M. I want to use it outside of my truck. Willie
On Fri, Dec 6, 2019 at 3:38 AM SUPERALPHA <mike.a.mccafferty@...> wrote: Yes --
Willie Peloquin N8WP Eschew obfuscation, espouse elucidation.
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I purchased two of these units. Just joined your group here as a member forwarded this thread to me. I too am working on antennas for the KSDR. My current goal is to go with VHF Vertical Dipole antennas. Alternatively 1/2 wavelength Marine antennas. Never had good results with the ground plane antennas (mag mounts or the boards in Ramsey Kit). Eric KD7CAO
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Michael WT9V
We only have a few folks with the Kerberos SDR units so far, but
the number is growing. Michael, WT9V On 2/23/20 7:41 PM, Eric KD7CAO wrote:
I purchased two of these units. Just joined your group here as a member forwarded this thread to me. I too am working on antennas for the KSDR. My current goal is to go with VHF Vertical Dipole antennas. Alternatively 1/2 wavelength Marine antennas. Never had good results with the ground plane antennas (mag mounts or the boards in Ramsey Kit). Eric KD7CAO
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Hi Eric,
I did a presentation at the RWK November meeting about this. It was based on v1.4 software so it's not up to date. And the Raspberry Pi 4 works better than the 3B+. https://nextcloud.qloudit.com:1443/s/3EgkxHCAQsxsK2d?path=%2F2019%2FNov%2011%20Show%20%27n%20Tell#pdfviewer The dual band mag-mounts work really well on 2m at 50cm spacing. Welcome to the Klub as well. I'll be processing your application momentarily. Danny K5CG
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Related link:
https://k5rwk.groups.io/g/main/message/6871 Mike McCafferty, P.E. N5MMC
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