112 Station Activities

Building 112 Station Activities

Vintage Station Amplifier RF Input Jack Replacement

Issue: The 30S-1 amplifier had been moved in order to access the space behind it. During the move, the RF cable from the exciter to the amplifier was left connected, resulting in the cable being stretched taut which cracked the ceramic insulator in the RF input jack on the amplifier.
Need: Looking for a volunteer to replace the RF input jack on the 30S-1 amplifier. Also, the RF cable from the exciter to the amplifier needs to be inspected to see if one or both of the connectors on the cable need to be replaced. Mike Hynek is presently working this project, but volunteer help would be appreciated.
Additional Information: Mike Hynek has replacement jacks. He can be contacted at either 295-0627 (daytime) or 573-6024 (evenings) or via e-mail at mjhynek@rockwellcollins.com. Mike has made a duplicate of this key. It is hanging in an obvious place in the 112 shack.

Antenna Work on the Roof

Issue: Replace the HF beam, add a (144mhz) horz and (146mhz) vertical beam above the HF beam, add two runs of coax to the shack, assemble the SteppIR, assemble the cushcraft 148-20T VHF beam.
Need: Volunteers
Additional Information: Contact Bryan McCoy 295-55575, David J Huff 295-8949

In the shack:
Issue: We need to redo the HF antenna connections. Right now we are using $200 polyphasers as our mounted cable ends. Of the 3 N polyphasers, 1 has broken pins, 1 has partially broken pins, and the other one looks like someone cross threaded it.
Need: Remount the polyphasers, we can use disposable connectors instead of wasting expensive polyphasers. All we need is a 19 rack strip to move the polyphasers to.
Additional Information: Contact Bryan McCoy 295-55575, David J Huff 295-8949

D-Star installation:
Issues: The DSTAR cabinet has no ground connection, it has a 3 prong grounded plug, but there is no connection to the ground rod type of ground.
The DSTAR system has no lightning protection polyphaser.
Someone set the DSTAR rack right on top of the steppIR coax. There is a nice flat spot on the coax, but the war wound didn't seem to affect the test above. There is enough slack we can cut it off and start again with a new end.
The DSTAR cables are now rerun next to a power line for the cabinet, I was able to kerchunk the repeater from home after I was done, but no idea if there is any desense from 110V running next to it.
We need a 6 foot extension cord, 110V, the DSTAR rack power cord is a little short, and needs to be moved.
Additional Information: Contact Bryan McCoy 295-55575, David J Huff 295-8949

HF Rig:
Issue: IC756PRO: Radio works OK without amp on HF.(75-100 Watts out) PW-1 shows 0 Power out. More investigation is needed to see if PW-1 Linear amp is blown.
Additional Information: Contact Bryan McCoy 295-55575, David J Huff 295-8949

Misc:
Issues: There are at least 2 unlabeled mysterious COAX heading down from the roof next to the G5RV and TH7 Beam.
The connector cabinet is still a mess, it is on the list to clean soon.
Additional Information: Contact Bryan McCoy 295-55575, David J Huff 295-8949

Operating Note:
SteppIR Vertical: Antenna problems now diagnosed, problem happens due to wind blowing on vertical, and de-tuning it while off. Note that users should ALWAYS run calibrate command before running HF on any band.