Jump to content

All Activity

This stream auto-updates     

  1. Earlier
  2. WD5G

    APRS Breakfast

    Ths location is to be determined by Mac. The time is usually 0745-0800L. Dave de WD5G
  3. Here is a very helpful guide for programming your radios to use the most common amateur satellites. If you program these frequencies into your radio, you will have a leg up on making things work properly from the start. I recommend you use two radios, along with a duplexer, or use a full-duplex radio to work the FM LEO satellites. The reason is that you really want to be able to hear your signal coming down from the satellite. Hearing your own signal helps you point and rotate your antenna to the optimal position. Two cheap Baofeng HT's will work just fine. An Arrow or Elk antenna will give you the best results, but you can always build your own. Amsat.org has everything you need to get started. The pass prediction on the AMSAT website has a web-based pass prediction calculator to give you all the info on time, AOS, TCA, LOS, etc. Dave de WD5G AO-91 AO-92 Freqs.txt
  4. If you tune your FM radio (HT or mobile) to the ISS downlink frequency of 145.800 you will likely hear a bunch of warbling tones when the ISS passes overhead. If you download and run the Android app Robot36 (free), you will see the images being sent by the ISS. Here's a YouTube video link to see this in operation. No wires are required as the audio from the radio receiver is picked up by the Android device's microphone.
  5. Here's a link to the form you need to fill out to get your Oklahoma Amateur Radio License plates. The initial cost is @12 and it is $9.50 for renewals each year. You still need to keep and update your regular tag. https://www.ok.gov/tax/documents/742-B.pdf Dave de WD5G
  6. NQ5M

    DX Spotting

    This is a new propagation tool posted by someone on the SCARS page on Facebook. https://soundbytes.asia/proppy/
  7. On September 24th of this year, the FCC issued an advisory regarding the use and sale of many of the inexpensive imported radios. This notice affects the sale, purchase and use of these radios. You should read this and become aware of its terms. https://www.fcc.gov/document/enforcement-bureau-issues-advisory-two-way-vhfuhf-radios Dave de WD5G
  8. NQ5M

    Route 66 On The Air

    Our current total for QSO's in 2018 is 1860 contacts, excluding duplicates. With duplicates, 2059. We made 2120 contacts in 2017. Thanks to all who participated!
  9. AA5KD

    September minutes

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

    August minutes

  11. https://www.mtcradio.com/ham-radio-day/ October 13th 8:00AM til 2:00PM (tailgating Starts Earlier) Prizes, Food, Fun, Tailgating,Music and more! 2707 Lamar Ave Paris Texas 75460
  12. NQ5M

    Route 66 On The Air

    Thanks to all the operators who volunteered time this year. This is what I've came up with, based on the sign-up page for operating. I know there were some places where multiple operators worked under a timeslot reservation, and will do my best to update this post AA5KD, Duane KA0ZWV, Ed K2GKK, Mac K5ATG, Ed KB1ZQ, Hal N4IJ, Doug N5OHL, Jimmy N5PJ, Perry NQ5M, Kyle W5SRO, Arni WA3OPY, Darell WA6LBU, Clayton WA9AFM, Tom WD0GTY, Jeff WD5G, Dave
  13. AD5BU


    I think this answers the question "In this day and age of cell phones why do we need Amateur Radio?" Obviously it is so we can use Morse Code on our cell phones! This would certainly help texting, since texting seems to use just the thumbs. So having to press only the dot or dash key (one for each thumb) would be an advantage. Let's require all texts to be in Morse, at least for teens. This would have the added benefit of either keeping them off their phones to start an actual conversation or creating a new group of CW experts for emergency communications.
  14. AA5KD

    Route 66 On the Air 2018

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

    Route 66 On the Air 2018

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

    Route 66 On the Air 2018

    Images and info go here.
  17. NQ5M

    Route 66 On The Air

    From Tom WA9AFM: AN UPDATE ON R66OTA OPERATING LOCATIONS..... For R66OTA, we have secured permission for mobile units to operate from several locations along Route 66 in the OKC/Edmond area. They are: The Round Barn in Arcadia, Pop's just west of Arcadia, The Oklahoma History Center, and Museum Of Western Heritage/Cowboy Hall Of Fame. Each locations has conditions, time limits, and restrictions. The Round Barn in Arcadia: UPDATE...Due to an earlier setup time for a wedding reception on Saturday, 8 September, the 'Loft' or north parking lot will not be available for any operations during R66OTA. There is a parking area across Route 66 south of the Round Barn available at any time throughout R66OTA. Pop's: operations permitted throughout R66OTA in the eastern parking lot 'near the grass'. No operations inside. Oklahoma History Center: operations permitted throughout R66OTA in the northeast portion of the parking lot; EXCEPTION: no operations on Saturday, 8 September due to a VERY large event at the Center; parking lot closes daily at 11 PM. No operations inside. Museum Of Western Heritage/Cowboy Hall Of Fame: operations permitted throughout R66OTA in the western end of the parking lot between 8 AM and 5 PM daily. No operations inside. If you wish to operate from any of these locations, please coordinate with WA9AFM (wa9afm@arrl.net) to make sure we have no conflicting operations. If security or management at these locations approach you and request you to leave, do so immediately.
  18. 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.
  19. If you're looking for a great DX spotting software package, you might take a look at DX Monitor by VE3SUN. It takes DX spots from several sites and aggregates the information into a single page. It is very configurable and can even control your rig if you want it to. Go to www.ve3sun.com to check it out. Duane and I have been using this for several years now and love it. 73 Dave de WD5G
  20. 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.
  21. AA5KD

    HamHoliday 2014 Elecraft booth.

    Dave and I manned the Elecraft booth for Elecraft during at HH 2014.
  22. 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.
  23. These images were taken in 2016.
  24. AA5KD

    What is SET

    I don't know Kyle, SET is an ARES thing. Maybe we can get Tom to answer that question.
  25. NQ5M

    What is SET

    Does SATERN participate in the annual SET, and if so how does OCAPA fit into the picture (since we support The Salvation Army)?
  26. Launch date was May 26 2018
  1. Load more activity

Important Information

Welcome to the OCAPA Website! Use of our website constitutes your agreement to our Terms of Use, Privacy Policy, and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.