HAM

Amateur Radio "HAM"

9am N6NFI Talk Net simulcast:

Microphone and Camera optional, connected to KR6DD echo link audio feed.

https://jitsi.noisebridge.io/HAM

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

RELATED: W6NOAP OP25 9am

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:

• https://perens.com/avrt5/
• https://byonics.com/aio
• https://www.dxengineering.com/parts/wmo-picoaprs

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

• http://paara.org/
• https://www.sfarc.org/
• http://bmha-hams.org/

Links/News

• HAM/Hackers needed
• Arecibo Collapse
• FAST Gigantic Chinese telescope
• Kristen W6WX Interview

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