Graham Brock, Inc.
Broadcast Technical Consultants

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Equipment Rental
 

STL System
Armstrong X-Link Composite, Frequency Agile STL Transmitter & Receiver

944.0 - 952.0 MHz

   

Simply use the front panel adjustment to change the frequency up or down from its present setting and press the lock button. In the blink of the eye the system locks onto the new frequency.

Adjustable power output from the front panel.

Features include 3 SCA , 1 MUX and 1 Mono input. Complete metering and monitoring of all system parameters is available for remote control connection.


Pricing :  Call (912) 638-8028


Network Analyzer
Agilent 8712ET RF Network Analyzer.

300KHz - 1300MHz

   

Capable of numerous types of analysis including impedance sweeps, reflected power and Smith charts.
  All analysis can be saved to the internal hard drive, 3 1/2 floppy drive or printed directly to a printer.  This piece of equipment is generally only rented with an operator (a.k.a. body guard).

Pricing :  Call (912) 638-8028


Potomac FIM-21
Potomac Field Intensity Meter, model 21.

.54MHz - 1.6MHz

   

Utilized for taking field measurements on AM stations such as Partial Proof's of Performance.  This can easily be shipped overnight.


Pricing :  Call (912) 638-8028


Potomac FIM-41
Potomac Field Intensity Meter, model 41.

.54MHz - 5.0MHz

   

Utilized for taking field measurements on AM stations such as Partial Proof's of Performance.  It has a greater frequency range and can be used for checking harmonics.  This can easily be shipped overnight.


Pricing :  Call (912) 638-8028


Potomac FIM--71
Potomac Field Intensity Meter, model 71.

45MHz - 225MHz

   

Utilized for a wide range of field measurements due to it's range in frequency.  This unit has a tunable antenna and shoulder strap for ease of carrying.  This can also be shipped overnight.


Pricing :  Call (912) 638-8028


Delta O.I.B.
Delta Operating Impedance Bridge 3.

 

   

Used for measuring the operating impedance of any AM system.  Unit comes with two connection leads.  It is capable of 10kW without modulation and 5kW with modulation.  It can also be used in conjunction with the Delta RG-3A.


Pricing :  Call (912) 638-8028


Delta Generator
Delta RG-3A Receiver / Generator.

.51MHz - 1.65MHz

   

Used in conjunction with an Operating Impedance bridge this unit is used to measure and adjust the impedance of a tuning network or phasor.  It has internal batteries and can operate without power for short periods of time.


Pricing :  Call (912) 638-8028


Sencore T.D.R.
Sencore CA 780 Metallic Cable Analyzer.

 

   

Very useful in determining the length of a cable or transmission line.  It will show a short or open line, which can be helpful in trouble shooting a transmission system for shorted bullets.


Pricing :  Call (912) 638-8028


Ocilloscope
BK Precision Oscilloscope, model 2120.

20MHz

   

This is a dual channel oscilloscope with two probes and padded case.  Shows sine waves, square waves and positive & negative AM modulation.


Pricing :  Call (912) 638-8028


FM Notch Filters (4 available)
Type 6367-2 tunable Notch filters. (4 available)

50MHz - 108MHz

   

Easily tuned with a spectrum analyzer or we can pre-tune them for you.  All four can be looped together to filter out multiple frequencies.


Pricing :  Call (912) 638-8028


 

AM Loop Antenna
Chris Scott & Associates AM loop antenna.

 

   

This directional AM loop antenna can be used in conjunction with the spectrum analyzer for performing NRSC-2 measurements as well as other measurements.


Pricing :  Call (912) 638-8028

 

TV-RF Performance Tester
Sencore TV-RF Performance Tester, model FS73.

 

   

Used for field measurements for TV and FM.  This is frequently used for doing "fly arounds" on FM antennas to measure the actual pattern of the station.


Pricing :  Call (912) 638-8028

 

Handheld RF Spectrum Analyzer
Protek 2GHz RF Field Analyzer, model 3201.

0.0 - 2.0GHz

   

A small portable, yet powerful piece of equipment.  Can be used for a range of measurements.  Can display in several different modes, single channel, multiple or full spectrum.  12VDC or battery operation.  Also can demodulate audio, narrow or wide band.


Pricing :  Call (912) 638-8028

 

Audio Generator / Receiver
Potomac AG-51 Audio Generator and Potomac AA-51 Audio Receiver.

 

   

A must have for setting up consoles or any equipment where you need to have a "known" audio level input and output.  These are generally rented as a pair, but can be rental each.


Pricing :  Call (912) 638-8028

 

Frequency Counters
Optoelectronics, Inc. 8010 & 8010-S Frequency Counters.

8010     0.0 - 1.0GHz
8010-S  0.0 - 600MHz

   

Digital frequency counters.


Pricing :  Call (912) 638-8028

 

RF Connectors / Watt Meters / Line Sections
Assorted Bird watt meters and line sections with connectors.

 

   

We have available a 3 1/8" & 1 7/8" line section with 500w, 2.5kw, 5kw and 25kw slugs.  A Bird Thruline model 43 inline watt meter with a 25w, 10w and 50w slug.  Two Myatt 3 1/8" to 1 7/8" EIA adaptors, two Myatt Type "N" to 1 7/8" adaptors and one BNC to Type "N" adaptor.  Great for use in an emergency situation when you need to feed the Exciter in to the main transmission line.


Pricing :  Call (912) 638-8028

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