Blonder Tongue Catv Modulator Saw Filter Channel 78

Product Code: eq70307
Availability: In Stock

$449.85 $544.32

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The Blonder Tongue CATV Modulator SAW Filter Channel 78from Blonder Tongue CATV Modulator SAW Filter Channel 78is an all-solid-state audio/video modulator that provides a modulated visual and aural RF carrier output on one specific CATV channel. The unit modulates the audio and video inputs and provides the requested RF CATV channel output for use in a CATV, MATV or SMATV system. The modulator accepts standard (sync negative) polarity video at a 0.7-2.5V peak to peak level from sources such as a TV camera, video tape recorder, TV demodulator or satellite receiver.

The modulator features a +55dBmV RF output level, and an IF SAW filtering for adjacent channel operation. All aeronautical channels are offset positive with a tolerance of ±5kHz as required by FCC 21006. All level controls are located on the front panel. The RF level control provides up to +55dBmV output. The video modulator control sets the depth of modulation for 87.5% over an input video level range from 0.7VP/p to 2.5VP/p. An audio modulation control permits adjustment for ±25kHz peak deviation of the aural carrier.

RF Specification
Frequency Range	CATV channel 78
Output Level	55 dBmV, minimum
Output Level Range	15 dB
Audio/Video Carrier Ratio Control	-7 dB to -20 dB
Frequency Tolerance	±10 kHz standard channels, ±5 kHz FCC 21006 offsets
Audio Carrier Frequency Setting	±1 kHz maximum, 4.5 MHz above video carrier
RF to Video Response	1 dB P/V from Fv -0.5 MHz to Fv +4.2 MHz
Broadband Noise	-90 dBc
Spurious Output	-60 dBc in 50 to 860 MHz Range @ +55 dBmV output
Output Match (Return Loss)	12 dBc
Vestigial Sideband Response	@ channel edge -20 dB, @ adjacent channel -40 dB
Video
Input	0.7 to 2.5 V peak to peak for 87.5% modulation
Input Return Loss	18 dB
Carrier-to-Noise Ratio	62 dB in 4 MHz bandwidth
Hum Ratio	60 dB peak to peak video to 60 Hz RMS
Differential Gain	5% at 87.5% modulation
Differential Phase	5° at 87.5% modulation
Group Delay	170 ±50 nS
Audio
Input Impedance	10 kΩ, unbalanced
Input	140 mV RMS for 25 kHz peak deviation
Frequency Response	±1.0 dB (50 Hz - 15 kHz referent to standard 75 msec pre-emphasis)
Intercarrier Stability	4.5 MHz at ±5.0 kHz
General
Power Requirements	105 - 130 VAC, 60 Hz, 10.5 W
Temperature Range	0 to +50°C
Connectors
Audio In	F-type female
Video In	F-type female
RF Output	F-type female
RF Output Test	F-type female -30 dB
AC Outlet	Female AC outlet 600 VA maximum
Mechanical
Line Cord	6' power cable: 3 wire grounded, 3 wire convenience outlet
Dimensions	19 x 1.75 x 3" (48.26 x 4.44 x 7.62 cm)
Weight	4 lb (1.8 kg)

Meets FCC docket 21006 aeronautical frequency offset requirements

Fully compatible with BTSC encoded stereo audio

Front panel accessible level controls for easy set-up and adjustments

AC outlet

Related Questions and Answers

Q: 1. I wanted to know if these Manfrotti 78" extension work with Impact's Varipole system. For some reason Impact doesn't make the silver extensions in 78" which is what I need now. Has anyone used them with Varipoles?

A: Yes, the Manfrotto 033 Single Extension for Autopole (78", Silver) should be compatible for use with the Impact Varipole system.

Q: 2. What type of junction box does this attach to? Round? Octagonal? Square?

A: The Bolide Technology Group 78" Heavy Duty In/Out Adjust Bracket (BH #BOBP002178) is not designed to accommodate a junction box. It is fitted with a standard 1/4"- 20 male camera mount.

Q: 3. I would need to Connect 3 Avid 16x16 I/O, is this possible?

A: No you can only connect two 16 in 16 out. The desk is 32.

Q: 4. As for the Sigma 18-35mm Art lens, will it fit both rings (zoom & focus).... or is the zoom diameter different from the focus diameter?

A: zoom is different, smaller. my caliper measures 75mm.

Q: 5. Is there some place I can find what sizes lenses are? I'm looking for 70-200mm f/2.8 GM II Sony gears (mostly the zoom).

A: The following ruler will allow you to measure your lens for proper Smallrig seamless gear fitting. https://bhpho.to/3QsFlEO

Q: 6. What is the min and max length of this?

A: The Max length is 78" The minimum length is approximately 20 inches

Q: 7. Need Sizes for Canon RF 100mm Macro 2.8 L?

A: The outer diameter of the Canon RF 100mm f/2.8L Macro IS USM Lens is 81mm and so you will need to use the 81 to 83mm Tilta Seamless Focus Gear Ring.

Q: 8. Can residential input coaxial cables (TV, weather station, etc) convert directly to RJ45/RJ11 connector for indoor weather station console? VideoEase CATV Balun II appears to do this. Thank you...

A: Yes, you are able to use your standard coax cable and convert the signal to RJ-45.

Q: 9. Can you let me know what the padding is like on the interior? Is it substantial enough to handle bumping around in a bag or is it a relatively thin leather material only?

A: A surprising amount of padding for such a small product, could hold up quite well to being bumped around the inside of a bag.

Q: 10. Will the 83mm stretch fit on a Mamiya 84mm diameter lens?

A: Not that we are aware of. If you have a lens with an 84mm outside diameter you need a gear ring specific to that size. We recommend the Cool-Lux LuxGear Follow Focus Gear Ring (84 to 85.9mm) instead, BH #COLG8485. https://bhpho.to/3mUSiXs

Steven	26/07/2024
[CATV channel 78] I was getting hum from my REL T9 subwoofer. REL customer service helped me track down the cause to electrical noise originating from my coax Xfinity cable connection and flowing through my cable box and my AV receiver and out to my subwoofer. After adding this ground isolator the hum immediately disappeared. 5