The AERIALS 443 Repeater system is constantly being improved. We have addressed all known problems with the system as we took possession of it and placed the system back into good working operation.
The repeater is currently GE Master II based using an RC-96 contrller with WACOM WP678 duplexer and additional db Products 3 cavity receiver pass/reject filtering on the receive side with Andrews hardline to a Celwave Super Station Master antenna at 180 feet above groound.
We have integrated a GE Master II VHF receiver at 162.450Mhz and an integral S.A.M.E. decoder for Severe Weather alerting to help save lives by announcing as early as possible the approach of severe weather conditions. AERIALS is the first repeater system in Monmouth county to provide this capability.
The repeater can be linked into IRLP for worldwide communications on demand via the N2CKH hub in Lakewood and will soon be installing all new linking radio equipments to provide full duplex access to the IRLP.
Soon we will also completely rebuild the repeater with a new receiver and transmitter sub system and the addition of a rack mounted continuous duty amplifier.
Here is a shot of some of the crap that we have to lug to the repeater site.
Here is a spectrum display of the output of the repeater on N2CKH's service monitor using a rubber ducky, the other signals on the display are not from the repeater.
A close up of the spectrum display centered on 443 while the repeater was transmitting.
Click here for photos of the system when work began.
Click here for photos of the system prior to July 6th 2002.
Below are some photos taken during a recent July 4th 2002 weekend work party of how the system currently is configured in its new cabinet.
From top to bottom is the Wacom duplexer, next what was a dbProducts 3 cavity duplexer and is now a 3 cavity receiver pass/reject filter. Under the cavities is a four fan A.C. powered, individually fused cooling panel, that will later be swapped out for all D.C.fan panel when the battery backup system is replaced.
Then comes a GE Master II M mobile that has been configured temporarily just as an amplifier by bypasssing the exciter/receiver and strapping the T/R relay and adding a input jack to connect the drive from the GE Exec II. On the next shelf is the GE Exec II exciter/receiver.
Lastly the ACC RC-96 repeater controller that is still partially encased in tin foil for additional shielding.
Here is the exciter cabling from the GE Exec II exciter/receiver to the GE Master II amplifer as seen from the cabinet front.
Here is a shot from the rear of the cabinet.
A close up of the Wacom and dbProducts duplexer from the rear. The Wacom duplexer has been retuned and a dbProducts duplexer has been reconfigured and tuned as a pass/reject filter for the ultimate in receiver filtering.
In this close up to far left the Advance Receiver Research (ARR) receive preamp can been seen with the red label, 17db gain pre-amp (19.5db gain measured). After removing the old lossy Motorola pass cavity and retuning the Wacom duplexer and adding the extra pas/reject filtering we ended up with an additional 10db receive gain and another -65db of 443 rejection.
Here we have the Bird watt meter reading 50 plus watts after the duplexer.
Here are some shots of the new D.C. power buss:
The D.C. power buss has been improved, however it needs to be completely redone as does the battery backup system.
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AERIALS, Inc.
U.S. Post Office Box 8
Morganville, N.J. 07751-0008