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 Midland LMR radio which will cover 430 MHz, several are candidates including: 70-530A 70-565A 70-1526A 70-1530A 70-1532A 70-1595A 70-1695A 70-5301A 70-5302A. Have eBay saved searched watching on there, keep eyes out at hamfests, these seem to be hard to find. Needed for RF link from Lancaster to Old Washington. ***Update 5/17/10*** Located stack (6) of 70-1630A/70-1530A XTR radios at Hamvention. Also secured a pair of 70-530A. All hit target frequency.
  • 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:

  • Precidion Voltage Regulator/Linear UA723CN : Jameco# 1129906 (Qty 10) [Astron Rebuilds]
    (BACKORDERED)
  • 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 #25612 (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]


Mouser:

  • 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:

  • 9 Pin Molex Male connector .093": Jameco# 224119 [XTR/Syntech I Power connector]

Build

  • Build cabinet for #RCHWD site, must house computer, radios, power supplies, TNCs. Computer should have 2 serial ports and wireless network card. Computer obtained, build in progress. Total count is 5 radios (1 6m, 2 2m, 1 1.25m and 1 70cm) and 6 TNCs (BPQ32 will be on all but APRS TNC, which will be linked to VM of Linux running Xastir for a digipeater/Igate). The 6th TNC will be wired to "share" the 145.010 radio to give both BPQ32 service as well as a Linux based RMS gateway. ***Update 5/11/09*** Computer built on Dell, had problems with Linksys N card, transplated into IBM desktop, still getting inconsistant behavior with wireless card. Going to return PCI card and locate Wireless Bridge. ***Update 6/20/10**** Cabinet is being built by NXS
  • Build Tennis ball Launchers to aid in installation of antennas in trees ***Update 6/20/10**** Opted for slingshot+fishing reel, successfully installed several antenna tie offs.
  • Construct small 222 MHz antenna to be installed very high at CMHSW3 site in hopes of having a clear shot to CMHSW4. ***Update 5/10/09*** 4 Element quad built and installed. 1.4:1 SWR on target frequency. Seems to be holding a fairly strong link. Varies between S1 and S5 depending on time of day.
  • Implement 10m FM 1200 Baud RF ports on MECH and MUTUAL. Tentative frequency of 29.685 MHz. ***Update 6/21/10*** Radios obtained, looking at antenna options. Possible Hamstick type dipole, distance covered is less than 5 miles.
  • Establish 70cm 1200 Baud link between CMHSW2 and CMHSW3 in 440 MHz range. CMHSW2 will use 70cm side (Duplexer is on site) of AR-270B. Unknown antenna for CMHSW3. ***Update 6/21/10*** Successfully installed 70-530B at both sites, link up on 440.100 MHz. Using this frequency to link out to MECH.
  • Where the hell is The Rick? ***Update 6/02/09*** He's been busy failing. Please try your call again later.****Update 6/21/09**** He is still failing and now has been named the CFO (Chief Failing Officer) of the group.

Develop/Test

  • Work on Radio/TNC/Computer setup for CMHSW1 site (Lincoln tower)
  • Testing Midland 70-9020 (806-870 MHz) Radios for possible 33cm work, used for local linking to keep 70cm clear.'**** Did these work???? **** They did not. There was no VCO to tune. Radios were turned into parts doners.

Maintenance/Modifications

  • Continue to modify Midland LMR Radios for Microphone Pre-Amp installation in radio
  • Upgrade 222 MHz link from CMHSW3 to CMHSW4 to 9600 Baud. KPC-9612s free. Probably QSY frequency down to 223.400. ***Update 6/21/10*** RF path is marginal, will keep at 1200 baud until further notice.
  • Allocate recycled 2m Mobile radio for KD8HEZ to use, reacquire IC-27a from his mobile setup. Probably TM-241a. ***Left DR-135T and IC-27a***
  • Fix man door to garage at CMHSW3, begin building benches and running electric
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