The CATV Channelized Audio/Video Modulator, Channel 35, 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.
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
Blonder Tongue BAVM-860 Specs
CATV channel 35
55 dBmV, minimum
Output Level Range
Audio/Video Carrier Ratio Control
-7 dB to -20 dB
±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
-60 dBc in 50 to 860 MHz Range @ +55 dBmV output
Output Match (Return Loss)
Vestigial Sideband Response
@ channel edge -20 dB, @ adjacent channel -40 dB
0.7 to 2.5 V peak to peak for 87.5% modulation
Input Return Loss
62 dB in 4 MHz bandwidth
60 dB peak to peak video to 60 Hz RMS
5% at 87.5% modulation
5° at 87.5% modulation
170 ±50 nS
10 kΩ, unbalanced
140 mV RMS for 25 kHz peak deviation
±1.0 dB (50 Hz - 15 kHz referent to standard 75 msec pre-emphasis)
4.5 MHz at ±5.0 kHz
105 - 130 VAC, 60 Hz, 10.5 W
0 to +50°C
RF Output Test
F-type female -30 dB
Female AC outlet 600 VA maximum
6' power cable: 3 wire grounded, 3 wire convenience outlet
Is it compatible with current digital transmission standards? Can it transmit HD video?
Asked by: Ian C.
The Blonder Tongue CATV Channelized Audio/Video Modulator with SAW Filtering meets FCC docket 21006 aeronautical frequency offset requirements and is fully compatible with BTSC encoded stereo audio.
Answered by: Graham N.
Date published: 2018-08-26
which norm handles? pal-B/G pal-N or NTSC? thanks.
Asked by: Jorge d.
The Blonder Tongue CATV Channelized Audio/Video Modulator with SAW Filtering SAW is NTSC only.
Answered by: Dennis A L.
Date published: 2018-08-26
Is there a way to take the hdmi out from my computer and send it down the cable in my home. It looks like the Blonder Tongue CATV Channelized Audio/Video Modulator with SAW Filtering (Channels 37-94, 100-135) will send the signal down the cable but how can I get the hdmi in?
Asked by: Linus M.
HDMI won't go directly in; the modulator accepts standard video in. There are converters that will down sample and convert your hdmi to standard video.Note that the converter sends the video out through RCA connectors and the modulator accepts video in via f-type connectors. I used something like these (though they were in stock when I purchased them) -hth