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About AA5KD

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    OCAPA President

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  • First Licensed
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  • Radios
    Icom IC-7300, Icom ID-5100a, Yaesu FT-400DR, TYT MD-9600, Yaesu FT100DR, Kenwood TH-D74, Yaesu FT-2DR, Icom ID-51 +2, TYT MD-380, Anytone D868UV
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  1. AA5KD

    September minutes

    OCAPA Minutes 15-SEP-18.pdf
  2. AA5KD

    August minutes

  3. AA5KD

    Route 66 On the Air 2018

    Here are two from Pop's today the 14th of Sept.
  4. AA5KD

    Route 66 On the Air 2018

    Here are two from Pop's today the 13th of Sept.
  5. AA5KD

    Route 66 On the Air 2018

    Images and info go here.
  6. AA5KD

    Bought a 3D printer

    I just recently bought a TEVO Tarantula 3D printer. Should be here on Tuesday the 11th. Will post images and stuff here as I go through the process of learning.
  7. I just bought this radio kit. The main board comes pre-assembled. You just have to wire the controls. Technical Specifications The µBITX is an understandable radio and, hence, can also be a learning experience. The complexity is kept to a minimum so you can always repair and make changes if you so desire. The µBITX has a carefully thought-out operator interface. The tuning knob features many menu options available with a simple push on the tuning knob. From RIT, to dual VFOs, to the keyer, and many other features are all accessible from the tuning knob by simply pushing on it. There are intelligent defaults everywhere (these are easily overridden). Example : below 10 MHz, it auto-selects LSB and vice versa. To operate CW, you just press the morse key. Architecture The µBITX uses upconversion to the first IF of 45 MHz. This eliminates the need for a large number of band pass filters, keeping the design simple and virtually image free. The roofing filter at 45 MHz is 15 KHz wide. The signal is then down-converted to 12 MHz where a low ripple SSB filter with 8 crystals is used to provide a sparkling audio. The transmitter has push-pull PA using two IRF510s for a clean output. The low cost IRF510s are simple and inexpensive to replace should the need ever arise. Receiver : Sensitivity: a 0.2uv signal is clearly audible Selectivity: 2.4 KHz, low ripple SSB filter with 8 crystals RIT (Receiver Incremental Tuning) Continuous coverage from 500 KHz to 30 MHz Sideband selection Detent-less encoder tuning. Tunes with larger step rates when tuned quickly Transmitter More than 10 watts up to 10 MHz, 7 watts up to 21 MHz, 2 watts on 28 MHz CW transmit with the built-in keyer Uses IRF510s x 2 as PA and 2N3904 x 4 drivers in push-pull mode for low distortion transmission. Raduino Features The Raduino is a small board with an Si5351 clock generator, an Arduino Nano and a 16×2 LCD display. It plugs into the main radio board. The software that controls the radio is written in Arduino’s C langauge. The feature set of the µBITX is controlled by the Raduino’s Open Source software. Open Source allows you to further enhance the software if you choose to do so. The menus are accessible by pushing the button on the tuning encoder. You can add more features by modifying the Open Source code. Dual VFOs RIT Manual override of LSB/USB selection CW Keyer Speed and tone selection Can I build it? Boxing it. You can pack the µBITX in anything from a cookie box to custom-made 19 inch rack. A metal box is highly recommended. We have used it every way including the bareboard on the bench. Some soldering is required. The kit is easily put-together. You have to mount the board inside an enclosure of your choice, screw in the connectors and solder the wired connectors to the sockets and controls. That’s all. All SMD’s and other components are pre-soldered on the PCB at the factory. Take a few hours to wire it up. Preparing the enclosure will take most of your time. You will need basic kit-building tools like soldering iron, a VOM. etc. Set aside a few hours to wire it all up and enjoy the experience. Support is here. Being an Open Source project, support is provided through a very active builders’ community at http://groups.io/g/bitx20. The collective wisdom of thousands of builders is at your disposal. Ashhar Farhan, the designer of µBITX is very active on the group. What’s included A fully test and tuned µBITX HF transceiver board (6″ by 5-1/2″). The Raduino board with display with µBITX firmware installed. Detent-free tuning encoder with push button for menu access 3 audio sockets for the mic, earphones, and keyer A high quality BNC Antenna connector Power supply connector and jack 8 brass standoffs with nuts and bolts for mounting the board(s). Reverse protection diode, some resistors for CW keyer. Electret mic and a miniature push button for Push-toTalk Volume control with on/off switch You will have to supply your own enclosure, power supply, microphone case, speaker to complete the radio. I will continue to post through the build.
  8. AA5KD

    HamHoliday 2014 Elecraft booth.

    Dave and I manned the Elecraft booth for Elecraft during at HH 2014.
  9. AA5KD

    OCAPA Crossroads repeaters

    This is an image of the 147.21 and 443.275 repeaters. The bottom is the Bridgecom 147.21 and the top is the Yeasu 443.275. The black box at the top left is the duplexer for the 443.275 repeater.
  10. These images were taken in 2016.
  11. AA5KD

    What is SET

    I don't know Kyle, SET is an ARES thing. Maybe we can get Tom to answer that question.
  12. Launch date was May 26 2018
  13. AA5KD

    What is AREDN

    AREDN™ - The Amateur Radio Emergency Data Network Mesh technology has evolved over the years. Most notably, Broadband-Hamnet™ (BBHN) has made substantial progress in expanding their unique approach to environmentally robust, commercially available, Ubiquiti, hardware. This has changed the complexion of mesh implementations from an experimental, hobby-oriented, novelty into a viable alternative network suitable for restoring some level of Inter/intra-net connectivity when “all else fails.” In 2015, the developers of BBHN software have kicked-off a new project focused on taking this technology to the next level. Comprised of the project manager, developers, and several of the testers who brought BBHN to Ubiquiti hardware, this team is geared to pick up where BBHN left-off. The AREDN Project mission is to provide the Amateur Radio Community with a quality solution for supporting the needs of high speed data in the Amateur Radio and Emergency Communications field. An Amateur Radio Emergency Data Network (AREDN™) is a high speed data network built with Amateur Radio Operators and Emergency Communications Infrastructure in mind. AREDN™ is self-configuring and self-healing. Where possible, AREDN™ will establish connections with as many other AREDN™ compatible devices (nodes) as possible and form a redundant mesh like network. AREDN™ nodes automatically finds the “most reliable” nodes (greatest chance of success on packet delivery) to attempt delivery of the packets sent across the network. One need not know the exact path to get to the destination, only to know what the destination is. AREDN™ uses commercial off-the-shelf (COTS) hardware originally intended to be used for unlicensed WIFI and re-purposes it to fits the needs of Amateur Radio Operators. By using such common gear we are able to benefit from affordable pricing and easy availability of reliable communications gear. By itself AREDN™ is only a networking technology - it provides the basis to move traffic around. It can be thought of as similar to a radio or a repeater, where the infrastructure is an AREDN™ node and the content that flows across it is one that the local users decide. Networks built on top of AREDN™ are IP based, very similar to but not dependent upon, the Internet and operating under the rules for Amateur Radio operators. Well-used publicly documented protocols (IPv4) are utilized to provide the greatest flexibility to local implementers of these high speed networks. Examples of what has been and can be deployed across these networks are: Computer Aided Dispatch (Responder management) Incident response and mapping solutions Static and video imagery of evolving situations. Real-time communications and systems Winlink message networks Asset management and monitoring (Repeater control, solar power management, etc) With the flexibility our solution provides, you can now deploy infrastructure to serve the local community by providing the ability to send the data that modern operators need. At the recent Palm Spings Hamfest on March 14, 2015 Andre Hansen, K6AH, gave an introductory presentation of the AREDN Project and a high-level "how to" on designing a wide-area mesh for restoring Inter/intra data-networking during disasters when primary network infrastructure has failed. Andre explains what a mesh network is, the types of people who might be interested in this technology, how to setup and use and AREDN network, various applications in support of EMCOMM and civic events, design considerations in building a network, and real world examples from the San Diego area deployment. The AREDN website is at https://www.arednmesh.org/
  14. AA5KD

    Field Day 2019

    Always the fourth full weekend in June. Field Day 2019 is 22-23 June.
  15. AA5KD

    FCC Rules

    March 2018 version of Part 97 March 8, 2018.pdf

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