ToDo

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Here is a list of things we are collectively working on.

Purchase

  • Acquire/split up power supplies at CMHSW2, CMHSW3, CMHSW4, #RCHWD to handle higher load from Midland LMR Radios
  • Acquire large spool (1000ft) of RG-213 and PL-259 Connectors. ***Update 11/08/09*** Secured 3 500ft rolls of LMR400 clone cable. 1st roll is consumed post MECH install.
  • Continue to acquire gear/test equipment for shared workshop. Will need antennas to cover as much HF as possible, 6m, 2m, 222 MHz, 70cm. Spare power supplies, few computers for workstations/web search, eprom burning facilities, packet host to test cables for 4 main interfaces: soundmodem(Linux), DRSI, TNC2, Kantronics 9 pin.
  • Locate portable computer, 20amp switching power supply and appropriate cabling for a portable LMR programming station covering both Syntech I and XTR/Syntech II models.
  • Syntech I programmer. Ordered on 5/5, expected ship on 5/7. ***Update 6/02/09*** Programmer arrived, successfully programming Z-273 and Z-383 modules.
  • Diamond MX-2000 (6m/2m/70cm) Triplexers with pigtails to allow connections to LMR radios.
  • SWR Meter effective up to 1200 MHz for usage for 33cm and 23cm antenna construction. (Diamond SX-1100) ***Update 1/26/10*** Meter purchased

Component orders:

Jameco:

  • 34 Pin polarized connectors: Jameco# 32644 (Qty 20) [Syntech I and XTR trunk mount cable construction]
  • Minifit Jr. 10 conductor receptical housing: Jameco# 880714 (Qty 25) [Mini XTR (8ch) Power Connectors] OUT OF STOCK UNTIL 4/2/2013!
  • Minifit Jr. Female connectors: Jameco# 304733 (Qty 200) [Mini XTR (8ch Power Connectors]
  • DB-25 Male Solder Cup Style connectors: Jameco# 223010 (Qty 20) [BPQ Polling Cables]
  • DB-25 Metalized Hoods: Jameco# 25604 (Qty 20) [BPQ Polling Cables]
  • Molex .093" Female Crimp connectors: Jameco #224231 (Qty 300) [Syntech I and XTR Accessory Connector Maintenance]
  • Molex .093" Male Crimp connectors: Jameco# 224223 (Qty 600) [Syntech I and XTR Accessory Connector Maintenance]
  • 9 Pin Molex Male connector .093": Jameco# 224119 (Qty 75) [XTR/Syntech I Power connector]
  • 1.25x.25" 20 Amp Fast Blow Fuses: Jameco# 1769137 (Qty 100) [LMR Power Cables]
  • Precidion Voltage Regulator/Linear UA723CN : Jameco# 1129906 (Qty 10) [Astron Rebuilds]
    (BACKORDERED)

Mouser:

  • Minifit Jr. 10 conductor receptical housing: Mouser# 538-39-01-2105 (Qty 25)


  • 500 pF Ceramic Disc Capacitor: Mouser# 562R10TST50 (Qty 10) - equal number to UA723CN Regulators [Astron Rebuilds]
  • Bipolar Transistor 2N3771: Mouser# 511-2N3771 (Qty 40) - Replacements for Astron Power Supplies [Astron Rebuilds]
  • .093 Molex Pin Extractor: Mouser# 538-11-03-0006 (Qty 2) [LMR Power Cables]
  • 3v Lithium Battery for MFJ-1270b/c, 1274, 1289: Mouser# 639-CR2430-P22 (Qty 10) [TNC Maintenance]
  • Audio Bridge Amplifier TDA7240A: Mouser# 511-TDA7240AH (Qty 5) [XTR Maintenence/Repair]
  • .140 In diameter pin plugs: Mouser# 571-350391-1 (Qty 100) [Syntech I High Power Connectors]
  • Universal Mate-n-Lock 9 pin connectors: Mouser# 571-14806730 (Qty 25) [Syntech I High Power Connectors]
  • Minifit Jr. Connector female pins .143": Mouser# 538-39-00-0078 (Qty 200) [Mini XTR (8ch) Power Connectors]

Digikey:

  • 2 Position .140MATE-N-LOK power connector: Digikey# A25469-ND (Qty 20) [XTR High Power Connectors]
  • .140 In diameter female plugs: Digikey# A25461CT-ND (Qty 60) [XTR High Power Connectors]


Reference:

Jameco:

  • 1.25x.25" Inline Fuse Holder: Jameco# 108792 (Qty. 50) [LMR Power Cables]
  • 1.25x.25" Fast Blow Fuses: Jameco# 1769170 (Qty 100) [LMR Power Cables]
  • Minifit Jr. 10 conductor receptical housing: Jameco# 880714 (Qty 40) [Mini XTR (8ch) Power Connectors]
  • 34 Pin connector crimp tool: Jameco# 73252 (Qty 1) [Syntech I and XTR trunk mount cable construction]
  • 34 Pin polarized connectors: Jameco# 32644 (Qty 20) [Syntech I and XTR trunk mount cable construction]
  • 34 Pin gray ribbon cable - 100ft: Jameco# 644050 (Qty 1) [Syntech I and XTR trunk mount cable construction]
  • 12 Pin Molex Accessory Connectors (.062"): Jameco# 224549 (Qty 20) [XTR High Power/Syntech II Accessory Connectors]
  • .062" Male Pins: Jameco# 224565 (Qty 100) [XTR High Power/Syntech II Accessory Connectors]
  • .062" Pin Extractor: Jameco# 142156 (Qty 2) [XTR High Power/Syntech Accessory Connector Maintenance]
  • DB-25 Male Connector: Jameco #38789 (Qty 50) [Packet Polling Cables]
  • DB-25 Metalized Plastic Hood: Jameco #25604 (Qty 50) [Packet Polling Cables]
  • DB-9 Female Connector: Jameco #15771 (Qty 10) [SVXLink Interface Cables]
  • Digital Multimeter, Fluke-115: Jameco #1537328 (Qty 1) [General Use]
  • Connector Accessories Mini-Fit JR Extraction Tool: Jameco #1961541 (Qty 1) [Mini XTR (8ch) Power Connector Maintenance]
  • Molex .093" & .062" Crimp Tool: Jameco #227491 (Qty 2) [Syntech I and XTR Accessory Connector Maintenance]
  • Molex .093" Female Crimp connector: Jameco #224231 (Qty 100) [Syntech I and XTR Accessory Connector Maintenance]
  • 9 Pin Molex Male connector .093": Jameco# 224119 [XTR/Syntech I Power connector]

Build

  • Construct pieces for Richwood site. Cabinet is now ready, obtained 5/8" bolts to fill open bulkhead slots. Planning on using 3 of 8 to start. Diamond V2000, Diamond V23 (APRS), Cushcraft 224WB. Use 4 (2 low/rear, 2 top) 5" fans for air circulation.
  • Setup a pair of 70-530B radios for 438 MHz range as a dedicated link between CMHSW2 and CMHSW3. Will use 70cm side of AR-270B at CMHSW2, antenna at CMHSW3 TBD. Set quality to 250 on both sides.
  • Remove 223.420 MHz radio/antenna from CMHSW2, CMHSW3
  • Add 145.010 MHz radio at CMHSW2, use 2m side of AR-270B. Attempt path to LAN01 in Lancaster, possibly MECH/CMHSW4.
  • Add 29.275 MHz port to CMHSW2 and CMHSW4. Try to make a seasonal resilient link to replace 223.420 MHz. Use VALIDCALLS and L3ONLY in BPQ port definitions
  • Construct 7 element 70cm quad, end mounted for Mechanicsburg to point to Richwood.

Develop/Test

  • What can we do to acquire more gear or funding?

Maintenance/Modifications

  • Inventory existing radio and TNC stock. Once inventoried, modify to ham bands. Mark each radio with center frequency and maximum power output. 7/08/10 Radios and TNCs inventory completed, begin modifications/tuning next.

Sites

  • Columbus/Battelle - 446.625 Radio seems to be slightly off frequency or is clipping due to over-deviation. Prepare LMR replacement wired for a DRSI DPK*2.
  • Columbus/Lincoln Tower - Tune VHF Duplexer for 144.390/144.930 to share GP-9 on 2m. Get inventory of existing antennas. Should be a 449-6S beam pointed towards Worthington and a 224WB pointed towards Lancaster.
  • Columbus/Southwest - RF Path tests:
     145.010 MHz 1200 Baud -> C K8QIK-12 - directional antenna towards Lancaster
     145.010 MHz 1200 Baud -> C N8XIX-12 - directional antenna towards Lancaster
     446.625 MHz 1200 Baud -> C KB8UVN-5 / omni or directional antenna north
     446.625 MHz 1200 Baud -> C KB8UVN-7 / omni or directional antenna north
     446.625 MHz 1200 Baud -> C W8CQK-1 / omni or directional antenna north
     446.975 MHz 1200 Baud -> C K8QIK-2 - directional antenna towards Lancaster
  • Johnstown - 223.420 MHz port not working at all to CMHSW2/CMHSW3. Repurpose as a possible link to Richwood. Run ethernet cable to outbuilding, possibly establish backup AXIP/AXUDP links. Repurposed 446.625 MHz port to 446.975 MHz and have a solid link into LANSW1/Lancaster.
  • Lancaster/Firestation #1 - Radio, TNCs, Eproms (TheNet X-1J4) and Diplexer installed. LAN01:K8QIK-12 on 145.010 MHz, #LANU1:K8QIK-14 on 440.500 MHz. UHF link is working well to WW Hill. Link to MECH only functional in evening, going to try increasing transmit power, need 20amp power supply.
  • Lancaster/FMC - Radio, TNCs, computer are ready. Waiting to install V2000 and A270-6S. Will sunset BBS at LFARC Clubhouse afterwards.
  • Lancaster/WW Hill - Everything is on the air, continued problem with 223.660 TNC. TNC swapped out, issues persist, CON LED goes solid and stops passing traffic. Suspect either BPQKISS channel D eprom or polling cable (7 port). Prepare replacement of both for next trip.
  • Pataskala - Contact W8ALC to see if he has interest in hosting additional systems.
  • Mechanicsburg - Add additional 70cm antenna to allow links to Richwood. Need additional Radio and TNC. Probably use 222 MHz to link to Mutual. Will need to add 2 more ports to the BPQ polling cable (5 total).
  • Mutual - V2000 is in the air, 2m and 70cm radios available, nothing tentative yet.
  • Richwood - 2 of 3 antennas are installed, feedlines run. Need to install one additional mast to support last 2m antenna (F23) for APRS. Cabinet is finished. Radios, TNCs and computer is ready. Going to need help getting the cabinet up there.
  • South Vienna - Site inventory, see available antenna space, what bands are available for linking. Hoping this will open up a path to Dayton.
  • Springfield - Antenna space unavailable at this time. Need to relocate IRA VHF repeater first. Tentatively planning on a 70cm link to South Vienna and Mechanicsburg.
  • Worthington/CMHSW2 - Attempting additional 70cm link to CMHSW3. Isolation seems ok, problems on CMHSW3 side.
  • Worthington/CMHSW3 - Getting significant bleeding between 440.100 and 438.500 ports. Need to try different antenna locations, possibly going cross polarized or try to move the frequency down further.
  • Upper Sandusky - Get in contact with station engineer. See what facilities are available. Reach out to local club to see if any sponsorship can be gained (Mainly antennas, feedline and power supplies). Ideally would like to link to Richwood, possibly Mechanicsburg to the south then Findlay and Tiffin to the north.
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