Service Photos & Docs

In order to view photos and records of service and repairs, just select and click on the link in the following list:

2019-02-27 Sinclair Q2330 6-Cavity VHF Duplexer, S/N: CC31901-1-1
Disassembled, four capacitors replaced, reassembled, tuned, and tested.

2019-02-25 Wacom WP-678 UHF 4-Cavity Duplexer, S/N: 6600A

2019-02-22 WFAZ FM 90.9 Nautel VS2.5 Broadcast Transmitter Repair
Lightning had damaged some of the Power Amplifier (PA) Modules and the power combiner network in the transmitter.

2019-02-20 Tune & Test RFS Model 0185417U05 UHF Duplexer, S/N: 13938-889

2019-02-18 Tune & Test RFS 633-6A-2N UHF Duplexer, S/N: 80040177-131

2019-02-18 Tune & Test RFS RFE4000A UHF Duplexer, S/N: 80001602-495

2019-02-18 Tune & Test RFS RFE4000A UHF Duplexer, S/N: M321215-040

2019-02-15 Repair and Re-Start of Harris HT20CD 21KW FM Transmitter for WRLD 95.3 FM
Transmitter had automatically shut down due to failure of phase detector relay module. Station operated on backup transmitter during the downtime of this transmitter.

2019-02-14 WACQ 98.5 FM Marti STL Receiver and Antenna Realignment and Translator Broadcast Startup
Marti STL Receiver for the station’s new 98.5 FM translator needed realigning due to STL frequency change. The STL receive antenna at the site could not previously be aligned for peak signal strength, and the translator was not yet broadcasting due to lack of STL signal to drive the broadcast transmitter. Station/translator began broadcasting station programming at approximately 12:55 p.m.

2019-01-27 Repair and Retune Wacom WP-678-R2 UHF Duplexer, S/N: 14549-E
Sent in for repair because duplexer would overheat and stop passing RF on the Low Pass side (used as Tx side on GMRS repeater) during high duty cycle repeater use. A final P.A. had been damaged as a result. Diagnosed as failing Johanson capacitors. Replaced capacitors and duplexer tested great after repeated and extended application of around 75 Watts of transmitter power. SWR, isolation, and Insertion Loss improved and duplexer assembly is performing better than factory specifications after repair and retuning.

2019-01-23 Tuning and Testing of RFS TDE7780A Mobile/Compact Duplexer, S/N: V177557A-030. Sent in for testing/repair/tuning due to severe problems on receive side of duplexer. Problem turned out to be a tuning issue: the SWR was extremely high in the Low Pass Branch (the owner’s Tx branch) which was causing massive Tx energy to reflect over to the High Pass Branch (the Rx branch in this user’s application), severely desensing the receiver.

2018-12-22 Repair of Quintron QT-4201 Paging Transmitter S/N 10740E1062, Which Had Begun To Only Intermittently Transmit (Note: the QT-4201 is essentially the same as the QT-4501, except for the transmit frequency range.)

2018-12-14 Termination and Sweep-Testing of 200′ of Belden 8214 Coaxial Cable with PL259 Connector Prior To Installation On New Tower

2018-12-12 Terminating 550′ of RFS LCF158 Cellflex 1-5/8″ Corrugated Coax Feedline with RFS NF-LCF1580D01 Female N-Type Connector Prior To Installation On New Tower

2018-12-05 Repair and Conversion of DB Products / DBSpectra -004 Loop Assemblies and Enclosures to -005, for Conversion of DB4062 Duplexer to DB4062-WOC-B (143-156) MHz Model

2018-11-14 RFS RFE4000A Duplexer, 80003536-019, Retuned and Tested

2018-10-05 Motorola T1504A Duplexer 274CFA0019, Overhauled, Tuned, and Tested

2018-10-03 Mobile/Compact Duplexer Svc. I.D. 20181003-01, Retuned and Tested

2018-09-29 Mobile/Compact Duplexers, Retuned and Tested
(Above document includes Duplexer Service ID’s 20180929-01 thru 20180929-03)

2018-09-14 Decibel Products DB4062 Conversion, Overhaul, Repair, Tune, Test

2018-09-09 Decibel Products DB4062 Conversion, Overhaul, Repair, Tune, Test

2018-07-26 Decibel Products DB4613-1A VHF Isolator w/Celwave High Power Load

2018-07-01 Decibel Products DB4062 Duplexer Cap Replacement, Tuning, Testing

2018-06-23 EMR Corporation 02515 UHF Preselector & Preamp Combination

2018-06-21 RFS 636-6A-2N UHF Mobile/Compact Duplexer

2018-06-21 RFS HFE8459A UHF Bandpass Filter Assembly

2018-06-16 Decibel Products DB4062 VHF Duplexer

2018-06-11 Phelps-Dodge Model 526SR Duplexer

2018-05-01, (5) EMR Corporation UHF Mobile/Compact Duplexers

2018-04-26, Motorola T-1504 UHF Duplexer (AI6BX)

2018-03-27, Motorola T-1504 UHF Duplexer

2018-03-07, Wacom 678 UHF Duplexer, S/N: 6820A

2018-03-06, Motorola 0185417U05 UHF Duplexer, S/N: Y4099KM321
* Note, this duplexer was manufactured by RFS/Celwave, model # PD526-4-2
and sourced by Motorola for use in Quantar and Quantro stations/systems

2018-03-05, DB Products GE-P1 (DB4076) UHF Duplexer, S/N: DS9353-2

2018-02-28, Sinclair Q2330E Duplexers, S/N: CC81624-1-1

2018-01-29, EMR 65316-1 UHF Duplexers, S/N: 100930-005

2017-11-26, Telewave TPRD-1554 VHF/2M Duplexers, S/N: 21932

2017-11-26, Telewave TWPC-1508 VHF Bandpass Cavity, S/N: 712

2017-11-20, GE/DB Products UHF Duplexer, S/N: D71655-4