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by kc3ntg＠radiofreqs.space

I could do 10m but only if you're in the Mid Atlantic region of the US most likely. I played around a little during the recent ARRL 10 meter contest and conditions were very rough save for very brief Sporadic E openings. Anyway mail me if you want to set something up. Also, I'd encourage you to get your general - it's not that much harder than Technician. One day I'll get Extra...

5 years, 9 months

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Olivia Sked

by kc3ntg＠radiofreqs.space

Hi All! I've been wanting to play with the Olivia mode, but there doesn't seem to be much activity around. If anyone wants to try it, let me know and we can set up a time. My QTH is the FM19 gridsquare (MD, USA) and judging by my FT8 contacts I usually get good propagation to the Midwest, the Gulf Coast (especially Texas for some reason), and sometimes to the Pacific Northwest when using 5-7 watts on 17 and 20 meters. I've had success locally in the Mid-Atlantic using 80 meters as well. 73! Justin KC3NTG

5 years, 9 months

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Re: 6m SSB

by stargazer＠radiofreqs.space

On 2019-08-06, <kc3ntg(a)radiofreqs.space> <kc3ntg(a)radiofreqs.space> wrote: > Anyone ever done any 6m SSB work? I'd like to hear recs on transceivers > that are budget-friendly. > > 73 DE KC3NTG I recommend the Yaesu FT-450D. With IF DSP it has a really great receiver and 100W on TX. Price is good too!

5 years, 10 months

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FCC license database search

by Matthew (NB0X)

You can now search the FCC license database via the command line. Command: fccdb <callsign> Example: $ fccdb nb0x NB0X Wishek, Matthew 792 Ellen Ln El Cajon, CA 920192618 -- nonlinear RadioFreqs.space Admin Amateur radio - NB0X

5 years, 11 months

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Pi-Star and MMDVM

by va7ksh＠radiofreqs.space

I'm currently living somewhere without a DMR repeater, and most hotspots are a bit out of my price range. Does anyone here have any experience with using a cheap ebay MMDVM as a DMR hotspot? I've linked the one I'm looking at below. I've already got raspberry pis sitting around that I could use with it. I'm just looking for any advice anyone might have before I go ahead and try it. https://www.ebay.ca/itm/UHF-VHF-MMDVM-hotspot-OLED-Antenna-Case-Support-P25…

5 years, 11 months

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CA wildfires: Cell companies can't promise indefinite service

by dokuja＠radiofreqs.space

Received this article from our Winlink net, thought I'd pass it along. https://www.sfchronicle.com/business/article/California-wildfires-Cell-comp… If a wildfire breaks out, your cell phone service may not work when you most need it. Most cell stations in California have backup options, like batteries and generators. However, some major cell phone carriers told the Federal Communications Commission in filings this week that if physical access to cell towers is cut off, they can't guarantee service. Backup power options "are not effective for mitigating the disruption to wireless communications when our facilities are damaged by fire," AT&T told the FCC.

6 years

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New User

by Matthew (NB0X)

Please welcome new user fresnel! -- nonlinear RadioFreqs.space Admin Amateur radio - NB0X

6 years

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HamBSD

by Matthew (NB0X)

User irl is working on adding AX.25 support to OpenBSD. Please checkout the HamBSD.org website for more information. RadioFreqs.space is prouding to be hosting the binary distributions for HamBSD! -- nonlinear RadioFreqs.space Admin Amateur radio - NB0X

6 years

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Re: IAP 2019

by Matthew (NB0X)

On 2019-08-10, MIT Radio Society on The MIT Radio Society <bozo(a)dev.null.invalid> wrote: > Lectures on Radio Technology, History, and Applications by guest speakers from > Nokia, MIT Haystack, and CWRU Hosted by The MIT Radio Society and EECS > Beginning Tuesday January 8th at 5:30PM in room 3-270 Have you ever wondered > about the underlying principles behind WiFi? How radar works, or how we know > so much about the early universe? Or even just what those people are doing up > on the Green Building roof at such odd hours? > > URL: http://w1mx.mit.edu/iap-2019/ > This lecture series is excellent, highly recommended. -- nonlinear RadioFreqs.space Admin Amateur radio - NB0X

6 years, 2 months

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Fwd: Fun with APRS

by Matthew (NB0X)

From: "Matthew (NB0X)" <nonlinear(a)radiofreqs.space> Newsgroups: radiofreqs.ham Subject: Fun with APRS I am interested in developing a CLI client for APRS for our users. As an experiment, you can telnet to the ARPS-IS servers and receive APRS reports in the terminal. $ telnet firenet.aprs2.net > Trying 129.15.108.120... > Connected to firenet.aprs2.net. > Escape character is '^]'. > # javAPRSSrvr 4.3.0b24 > user NB0X-TL pass -1 > # logresp NB0X-TL unverified, server N5JXS-F1, adjunct "filter default" No filter set > #filter r/32/-116/300 > #filter r/32.0/-116.0/300 active > AF6YU-B>APDG02,TCPIP*,qAC,AF6YU-BS:!3234.48ND11700.92W&RNG0001 440 Voice 445.20000MHz +0.0000MHz > N6KNE-14>APDR15,TCPIP*,qAC,T2FEJER:=3356.76N/11717.89Wu122/054/146.520MHz/A=001387 https://aprsdroid.org/ 146.52 > HEAPS>APN383,WIDE2-2,qAR,N6JCM:$ULTW00000065030E0000----000086A00001----011700C800000000 > KD6RSQ>APRS,WIDE1-1,qAR,KF6SJ-10:$ULTW009900C8037E225F27AAFFF39C26000101BD00DA02D500010032 > ... The filter command '#filter r/32/-116/300' requests all reports in a 300 mile radius of Lat 32N Long -116W. Other filter commands are documented here: http://aprs-is.net/javAPRSFilter.aspx The firenet subdomain includes many APRS reports that aren't included in the normal APRS-IS network. From http://aprs-is.net > If you want to inject non-amateur radio content, use the FireNet > local-only port to prevent the packets from entering APRS-IS. > FireNet exists to give amateur radio operators and authors a > place to inject non-amateur radio information such as METAR > reports, detailed earthquake reports, etc. for FireNet users > while not adversely affecting APRS-IS. FireNet users still have > full access to APRS-IS in addition to the FireNet local packets. For the APRS CLI client, I would like to have the ability to do ARPS messaging to interact with APRS services such as: * ANSRVR * Email * SMS Gateway As well as be able to exchange APRS message with both APRS users and Brandmeister DMR radios. Note: I have previously exchanged text messages with my DMR HT and an APRS app on my phone. The METAR reports from firenet are interesting, realtime weather reports from local airports. METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNFG *072155z3318.00N/11721.00W_230/008g017t077h57b10129 CA_MCAS CAMP PENDLETON METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNKX *072155z3252.00N/11709.00W_280/009g...t080h54b10135 CA_MCAS MIRAMAR METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNRS *072156z3234.00N/11707.00W_280/013g...t073h73b10139 CA_IMPERIAL BEACH, NOLF METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNXP *072156z3418.00N/11610.00W_200/013g023t100h17b10139 CA_TWENTYNINE PALMS MARINE METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNYL *072157z3239.00N/11436.00W_300/005g...t104h20b10088 AZ_MCAS YUMA METAR-2>APFMET,TCPIP*,qAC,WE7U-IE:;MTRKNZY *072152z3242.00N/11713.00W_270/010g...t073h64b10132 CA_NAS NORTH ISLAND, SAN DIEGO 072152z is UTC 10:52PM UTC on August 7 3242.00N/11713.00W is lat/long 240/008 is wind 8 knots from 240 degrees (SWW) g017 is wind gusts to 17 knots t077 is temperature 77 degree F h57 is relative humidity 57% b10129 is barometric pressure 1012.9 mb More information can be found at: https://www.wunderground.com/metarFAQ.asp -- nonlinear RadioFreqs.space Admin Amateur radio - NB0X

6 years, 2 months

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