ARES - Linn County, Iowa

Activity Reports

The following is a list of various ways Amateur Radio has contributed to local government and other public service organizations. This list may include activities organized by ARES, CVARC, or any other Amateur Radio organization that let's us know how they are contributing. THANKS TO ALL OUR VOLUNTEERS!


Mercy Hospital Antenna Installation - 4/20/2008

The new antenna is installed on top of Mercy Medical Center and all of the  cabling has been installed and tested. This system is now operational.  This afternoon, John LeClaire (KC0WQD), Phil (K0PAS), Tom (KD0HF), Brett  (KC0VJI) and myself completed the installation. John and his crew had previously routed the cable down the access shaft from the Utility Room to the 1st  floor and over to the ceiling where the radio is to be located. The antenna was  installed on the tower and connectors put on the four ends of the LMR-400 cable.

The cable from the antenna is broken in the Utility Room by a polyphaser lightening arrestor. Using a 3 watt Handi Talkie on this cable, we were able to  bring up the Waterloo Repeatr (146.94). On low power (.5 wattt), we could  bring up the Independence, Manchester, Benton County, Iowa County, Jones  County, and of course Cedar Rapids area repeaters on 2 meters. We were able to  successfully access the 450 MHz repeaters in the CR area as well. The connectors were installed on the long cable run and power levels tested  between the radio room on the first floor and the polyphaser in the Utility Room. I don't have the exact power figures but they were very close to the  values specified on the cable comparison chart A information package on this station will be created and made available for  those members who might be deployed to this hospital.

Thanks to John, Phil, Tom, and Brett for helping to get this project completed so quickly.

Steve, WA6GFD


St. Luke's Hospital Antenna Relocation - 11/14/2007

The new antenna is installed and in place.   We checked the Iowa City repeater and are good into it as well as the Independence repeater.   We did some power measurements on both ends of the cable and the results were not un-expected:  

BAND        AT TX            AT ANT
144            37                  5                        8.69db loss
 
440            22                 .5                        16.43db loss
   

We gained about 2db of gain on 144 Mhz with the new antenna but as you can see the cable loss is pretty bad.  So would recommend we starting thinking about locating some new cable (low loss) to replace this piece.  

Steve, WA6GFD  


EMA Station Work - HF Dipole

WA6GFD and KD0HF moved the CAP dipole at EMA last on 17 July. Moved it East about 50 feet so now it is above the East part of the building which is all classrooms and not above the EOC room and wiring closet.  We tested the PA system after the move and were unable to hear any noise in the PA system. Tried the amateur HF radio also and found no noise from it either, even though we did not make any changes to the amateur dipole.
Not sure if we had the PA system set up correctly with everything turned on, but will try it again at the EMA meeting tomorrow night.
Maybe the amateur signal was coupling to the CAP antenna and then into the PA system.  At this point, the interference seems to be greatly improved.


Command Post Vehicle Radio

I installed the Kenwood radio in the EMA command vehicle. The radio is in the cabinet where the old radio was located. I installed a Power-Pole connector on the radio and installed a Power-Pole connector on the banana plugs on the dash where the radio will plug in. I thought about banana plugs on the radio but that would provide no polarity protection for the radio. The Power-Pole connector looks like a good alternative.
I have some labels that I want to put on the radio with your name and mine and "Amateur radio W0GQ" and a label for the antenna connector on the dash "Amateur radio dual band antenna"
I also have 2 pair of cheap headphones to put in the cabinet with the radio just so that there are some headphones available.
The instruction book is with the radio along with a printout of the programmed frequencies and frequency name.
I didn't actually try the radio in the van, so that should be checked out sometime. Might also be good to create another coax cable for the radio - UHF to BNC. The one that is there is too long and too old. I will work on making one after I get back from vacation - will return on Jan 12, 2006.
I have the Yeasu dual band radio at my house.

Tom, KD0HF