Best Digital Audio Video Recorder

Blonder Tongue Catv Channelized Audio/video Modulator With Saw Filtering (channel 75)

Product Code: ga70304
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$449.85 $710.76

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The CATV Channelized Audio/Video Modulator, Channel 75, from Blonder Tongue is 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 75
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. Can the inputs scale down 4k video input to 1080p? the intended camera for use is the BHG1 which outputs only 4k over HDMI?

A: No it can not. You will need to send a 1080p or lower signal for the switcher to process the video. Keep in mind that on cameras like the BGH1 your recording resolution and output resolution do not need to be the same. Therefore it is possible to record in 4K while outputting a 1080p video signal if necessary.

Q: 2. Is the similar Elvid switcher (which I bought) a B&H house brand, i.e., who is the actual manufacturer of this AVMATRIX unit?

A: We have not done a comparison of the AVMATRIX HVS0402U 4-Channel HDMI Video Switcher and the Elvid VSW-4H-USB 4-Input HDMI Broadcast Video Switcher. From comparing specs, the two switchers appear to be close to identical with potential software/support differences from each of the companies.

Q: 3. Will this unit play .wav files from the USB stick?

A: Yes, the Technical Pro H1502URBT 5.2-Channel Audio Receiver can play .wav files from a USB drive.

Q: 4. Can this switcher stream directly to the internet like the Blackmagic Mini?

A: The AVmatrix Micro 4-Channel HDMI & DP Video Switcher features an USB-C Out for Capture & Streaming, which could be used to directly connect it to a computer, for live streaming purposes over the internet.

Q: 5. How do you download the pics to a computer with that kind of adaptor???

A: This adaptor is for hooking your camera up to a TV. To download pictures to your PC you need the Nikon UC-E6 USB cable.

Q: 6. This basically looks like the Elvid video switcher, what is the difference between this and the Elvid?

A: No differences between the switchers, other than the branding.

Q: 7. Is it work over Internet? Then Please send me how it pair with its encoder.

A: Yes, this decoder is Wi-Fi enabled and can be accessed via web browser or iVMS 4200 client software. Detailed instructions can be found in this doc on pgs 13-20: https://us.hikvision.com/sites/default/files/ud05526b_baseline_user_manual_of_ds-6900udi_series_decoder_v2.1.0_20170713_0.pdf

Q: 8. Are Preamp outputs volume controlled with the master volume control as well as the PreOut level control knob?

A: Preamp controls each channel individually, and the master controls the summed signals.

Q: 9. original

A: Yes Nikon EG-CP16 Nikon Audio/Video Cable is an original Nikon cable.

Q: 10. Can I use this to mount a 100mm Tripod head to a 75mm Tripod bowl?

A: This is exactly what it's designed for.

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