HAM: Difference between revisions
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<big><big>https://jitsi.noisebridge.io/HAM</big></big> | <big><big>https://jitsi.noisebridge.io/HAM</big></big> | ||
Now Playing: | |||
*[https://www.youtube.com/watch?v=ZuNOD3XWp4A All Your RFz - Balint Seeber (DEFCON21) | |||
*[https://www.youtube.com/watch?v=CCNzzedU3gE - SDR Basics - Balin Seeber (DEFCON26)] | |||
*[https://www.youtube.com/watch?v=1RipwqJG50c IM Hacks Garage - Samy Kamkar (OWASP 2016)] | |||
Next hack!? | Next hack!? |
Revision as of 15:54, 28 March 2021
Amateur Radio "HAM"
9am N6NFI Talk Net simulcast:
Microphone and Camera optional, connected to KR6DD echo link audio feed.
https://jitsi.noisebridge.io/HAM
Now Playing:
- [https://www.youtube.com/watch?v=ZuNOD3XWp4A All Your RFz - Balint Seeber (DEFCON21)
- - SDR Basics - Balin Seeber (DEFCON26)
- IM Hacks Garage - Samy Kamkar (OWASP 2016)
Next hack!?
https://hamprojects.info/brian-SM/
A-N-D
[EXMPERIMENTAL]
LIVE Stream: rtmp://space.noisebridge.info/live/HAMbridge
Open in VLC as network stream (Ctrl + N)
This is a test stream directly from our FPGA based streaming box. It is up most of the time and running a test feed with an HDMI input and overlays with VGA from pegasus showing tmux with performance and weather information. The stream may not start properly, and I sometimes have to try loading it a few times for the video to stream properly. There is audio from Mary piped in but it usually quite. Looking to switch this over to monitor SDR or the like as well.
Want to talk radio or the like, open jitsi meeting available, there may or may not be anybody home: https://jitsi.noisebridge.io/HAM
The main noisebridge hangout is here, and is more likely to have something going on:
https://jitsi.noisebridge.io/hackitorium
Band Plan: http://www.arrl.org/graphical-frequency-allocations
Space
- Frequencies & Info on contacting the International Space Station
- Current position and track of ISS
- Satellite & Space Contacts
Suggested HT (handheld transevier) TH-D72A
Paired with AL-800 (clone) Antenna
HF
HF stands for High Frequency. In today's RF landscape this is the low end of the frequency band generally from around 3-30Mhz or 160-10 meter wavelength.
Propagation Reports & Forecast International Beacon Project
ATV
ATV is Amateur Television broadcast and receiving.
Information on setting up an ATV station
APRS
DEF CON HAM Radio Village APRS Demo
Hardware:
Packet Radio
https://portal.ampr.org/index.php
Resources
Hardware
- Noise Bridge R-15
- QRP CW Transceiver
- RTL-SDR.com
- SDRplay
- Speach/Accessibility friendly HT Radiooddity GD-77
Clubs
Links/News
Antennas
2m (VHF)
- https://everydayready.wordpress.com/2015/10/19/diy-2m-tape-measure-yagi-antenna/
- https://offgridsurvival.com/2meterantenna-homebrewdroopygroundplane/
- http://iz8jji.blogspot.com/2011/04/roll-up-2m-jpole-antenna.html
40m (HF)
Vertical Antenna
https://www.electronics-notes.com/articles/antennas-propagation/vertical-antennas/vertical-types.php
G5RV Dipole
https://en.wikipedia.org/wiki/G5RV_antenna
Works ideally suspended horizontally above the ground. Inverted V is also common with greater then 90 degree spread.
Bay Area Repeaters
VHF 2m (144-148 Mhz)
2m/70cm Repeater Book Entries within 25mi of Noisebridge
Testing uplink and downlink analog capabilities starting on the 2 meter band, the following stations have been confirmed working from the East Bay with relatively low power setups.
Callsign Frequency Offset Tone Location County -------------------------------------------------------------------------------- K6EAG 145.130 -0.6 MHz 127.3 Hayward Alameda W6RGG 147.240 +0.6 MHz 107.2 San Leandro Alameda W6PW 145.150 -0.6 Mhz 664N* Sutro Tower San Francisco WB6NDJ 146.880 -0.6 Mhz 77.0 Oakland Alameda WA6TOW 146.925 -0.6 Mhz 114.8 North Peak San Mateo N6NFI 145.230 -0.6 Mhz 100.0 Palo Alto Santa Clara WR6ABD 146.640 -0.6 Mhz 162.2 Loma Prieta Santa Clara KI6AOZ 146.085 +0.6 Mhz 114.8 Newark Alameda W6CX 147.060 +0.6 Mhz 100.0 Mt. Diablo Alameda Tone: Unless otherwise noted is up-link tone frequency in Hz * Uses DCS on Rx/Tx
UHF 70cm (420-450 Mhz)
WW6BAY 443.975 100.0
Tone Control
DTMF
Try '699' on N6NFI
DCS
- http://mmi-comm.tripod.com/dcs.html
- https://wiki.radioreference.com/index.php/DCS
- http://www.repeater-builder.com/tech-info/ctcss/ctcss-overview.html
SDR
Satellites
https://publiclab.org/notes/sashae/06-26-2020/diy-satellite-ground-station