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3dbm Inc.

3dbm Inc 70MDF-BRZ 70MHz FM Modulator RF Monitor Tone Monitor Satcom

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SKU:
39377
MPN:
70ndf-brz
Condition:
Used
Availability:
Usually ships within 1–2 business days.
Weight:
7.00 LBS
Shipping:
Calculated at Checkout
  • 3dbm Inc 70MDF-BRZ FM Modulator – front-right three-quarter view showing front panel with Tone Monitor, RF Monitor, FM Modulator Fault indicator, and Operate/Calibrate controls
  • 3dbm Inc 70MDF-BRZ FM Modulator – rear-left three-quarter view showing IEC AC input, fuse holder, AC ON/OFF switch, BNC connectors, and DB9 port
  • 3dbm Inc 70MDF-BRZ – close-up of manufacturer label showing brand '3dbm Inc', model '70MDF-BRZ', and serial number field
  • 3dbm Inc 70MDF-BRZ – front panel close-up showing Tone Monitor (BNC), RF Monitor (BNC), FM Modulator block, Fault indicator, Calibrate and Operate push-buttons
  • 3dbm Inc 70MDF-BRZ – rear panel close-up showing J1 Tone Input, J2 Main RF Output, J3 Range Calib RF Output (all BNC), J4 DB9 connector, J5 AC Input, 2A fuse, and AC ON/OFF switch
  • 3dbm Inc 70MDF-BRZ – interior view with top cover removed, showing internal PCB assemblies, cabling, and the 70MDF-EQ-BRZ-M equalizer module
  • 3dbm Inc 70MDF-BRZ – interior close-up of internal equalizer module labeled '3DBM INC EQUALIZER 70MDF-EQ-BRZ-M S/N 117A' with Tone Input, Tone Out, and Tone Monitor SMA connectors
  • 3dbm Inc 70MDF-BRZ – interior close-up of FM modulator sub-assembly labeled '3DBM INC 70MHz FM MODULATOR 70MDF-FM-BRZ S/N 117A' with RF OUT, RF Monitor, RF CAL, and Tone Input connectors
$325.00
Was: $650.00
Current Stock: 2

Sold Out

Description

3dbm Inc 70MDF-BRZ 70MHz FM Modulator RF Monitor Tone Monitor Satcom

70MHz FM modulator with integrated RF monitor and tone monitor capabilities. Designed for satellite communications IF modulation with internal equalizer module. Operates on AC power with front-panel Operate/Calibrate switch and fault indication.

Specifications & What's Included

  • Model: 70MDF-BRZ (includes internal 70MDF-EQ-BRZ-M equalizer)
  • Center Frequency: 70 MHz FM modulation
  • Connectors: BNC (tone input, main RF output, range calib output), SMA, DB9
  • Front Panel: Tone Monitor, RF Monitor, FM Modulator Fault indicator, Operate/Calibrate switch
  • Power: AC input (IEC inlet, 2A fused)
  • Form Factor: Benchtop/rack module

Applications

Used in satellite ground stations and satcom uplink systems for intermediate frequency signal modulation. Typical deployment in telecom and aerospace RF environments where 70MHz IF chains are standard. Compatible with modular satcom racks and monitoring systems requiring integrated tone and RF signal observation.

Condition: Used
This 3dbm Inc 70MDF-BRZ 70MHz FM Modulator has been inspected and is in good used condition. It was pulled from a working satcom environment where it was actively in use and functional. The gold-anodized aluminum enclosure shows light surface wear consistent with field use. All front-panel controls, indicators, and BNC monitor ports appear intact. The rear panel connectors — including the BNC RF outputs, DB9 interface port, IEC AC input, and fuse holder — are in good shape with no visible damage. The internal 70MDF-EQ-BRZ-M equalizer sub-assembly and 70MDF-FM-BRZ modulator module are present and undamaged. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
3dbm Inc
Model:
70MDF-BRZ
MPN:
70MDF-BRZ
Secondary Model:
70MDF-FM-BRZ
Type:
FM Modulator with RF Monitor and Tone Monitor
SKU:
39377
Condition:
Used – Pulled from Working Environment
Seller Notes:
Includes internal 70MDF-EQ-BRZ-M equalizer module
Center Frequency:
70 MHz
Modulation Type:
FM (Frequency Modulation)
Connector Type:
BNC, SMA, DB9
Rear Connectors:
J1 Tone Input (BNC), J2 Main RF Output (BNC), J3 Range Calib RF Output (BNC), J4 DB9, J5 AC Input
Front Panel Features:
Tone Monitor, RF Monitor, FM Modulator Fault indicator, Operate/Calibrate switch
Fuse Rating:
2A
Power Input:
AC (IEC inlet, fused 2A)
Form Factor:
Benchtop / Rack Module
Internal Module:
3dbm Inc Equalizer 70MDF-EQ-BRZ-M
Application:
Satellite Communications (Satcom) IF Modulation
Country/Region of Manufacture:
United States
Condition Notes:
3dbm Inc 70MDF-BRZ 70MHz FM Modulator in good used condition. Pulled from a working satcom environment where it was in use and functional. Enclosure shows light wear. All connectors and controls intact.
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Was: $850.00
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SKU:
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Availability:
Usually ships within 1–2 business days.
Weight:
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Brand:
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Model:
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MPN:
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Secondary Model:
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SKU:
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Type:
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Condition:
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Plugin 1 Model:
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Plugin 2 Model:
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Plugin 3 Model:
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Included Component:
JFW Industries 50DR-003 RF component (internal)
Form Factor:
Rackmount Plugin Chassis
Number of Plugin Slots:
3
Signal Type:
RF AM / FM
Application:
Satellite Communications (Satcom) Uplink
Rear Connectors - FM Modulator:
BNC RF Out (J5), BNC MOD IN (J6), DB9 Status (J7), AC Power (J8)
Rear Connectors - Attenuator:
BNC RF1 Input (J1), BNC RF1 Output (J2), BNC RF2 Input (J3), BNC RF2 Output (J4)
Rear Connectors - Main Module:
BNC Tone Input (J1), BNC Main RF Output (J2), BNC Range Calib RF Output (J3), DB9 (J4)
Power Requirements:
105–125 VAC, 60 Hz; Fuse 2A
Front Panel Controls:
Operate/Calibrate switch, RF attenuation knobs (FM Mod 1 & 2), indicators
RF Attenuation Range:
0–40 dB (per FM Modulator attenuator dial)
Country/Region of Manufacture:
United States
Compatible With:
Satcom Uo Upconverter, RF Amplifier systems
Seller Notes:
Chassis with three installed plugin modules as described. Tested working.
Condition Notes:
3dbm 70MDF-DAT-BRZ Satcom FM Modulator Plugin Chassis tested and confirmed working with a compatible Uo Converter and RF Amplifier. All three plugins installed. Normal wear. Unit shipped may vary from photo.
3dbm 70MDF-DAT-GLW dual-channel satcom modulator front panel view showing three plug-in modules in 19-inch rack chassis 3dbm 70MDF-DAT-GLW rear panel view showing BNC connectors, IEC AC input, DB9 serial ports, and AC power switch on two modulator plug-ins
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3dbm 70MDF-DAT-GLW Dual-Channel 70MHz FM Satcom Signal Modulator 19" Rack

3dbm

$375.00
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3dbm 70MDF-DAT-GLW Dual-Channel 70MHz FM Satcom Signal Modulator 19" RackA dual-channel 70MHz FM satcom signal modulator in 19" rack-mount form factor. This unit modulates baseband signals onto a...
39334
SKU:
39334
Availability:
Usually ships within 1-2 business days.
Weight:
35.00 LBS
Brand:
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Model:
70MDF-DAT-GLW
MPN:
70MDF-DAT-GLW
Secondary Model:
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Type:
Dual-Channel 70MHz FM Satcom Signal Modulator
SKU:
39334
Condition:
Used – Pulled from Working Environment
Form Factor:
19" Rack Mount Chassis
Number of Channels:
2
Modulation Type:
FM (Frequency Modulation)
Center Frequency:
70 MHz
Plug-In Module 1:
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Plug-In Module 2:
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Plug-In Module 3:
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Internal Sub-Assembly 1:
3DBM INC. 70MDF-GLW-MOD 70MHz FM Modulator
Internal Sub-Assembly 2:
3DBM INC. 70MDF-GLW-EQ Equalizer
RF Connector Type:
BNC (Tone In, Main RF Out, Range Calib RF Out)
Serial Interface:
DB9 (J4, J5 — RS-232 control)
AC Power Connector:
IEC C14 (J6 – AC Input) with fuse pull
Front Panel Controls:
Operate/Calibrate, Equalize/Linear switches; LED indicators
RF Attenuation Control:
Dual rotary attenuators: FM Modulator 1 & 2 RF Attenuation
Rear Connections per Module:
Tone Input (J1), Main RF Output (J2), Range Calib RF Out (J3)
Attenuator Module Ports:
RF 1 In (J1), RF 1 Out (J2), RF 2 In (J3), RF 2 Out (J4)
Application:
Satellite Ground Station / Satcom Uplink Signal Modulation
Seller Notes:
Includes 19" chassis with two 70MDF-GLW modulator plug-ins and one 50AT-1-2R dual attenuator plug-in.
Country/Region of Manufacture:
United States
Condition Notes:
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Availability:
Usually ships within 1-2 business days.
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MPN:
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Type:
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SKU:
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Frequency:
70 MHz
Modulation Type:
FM (Frequency Modulation)
RF Output Connector:
BNC
FM Modulation Input Connector:
BNC
Panel Meters:
RF Power (dBm), Carrier Deviation (MHz), Regulated Supply (VDC)
Alarm Outputs:
Lock Alarm Out, RF Level Alarm Out (circular multi-pin connectors)
Alarm Relays:
Yes — relay contacts wired per rear-panel diagram
Carrier Deviation Adjust:
Rear-panel trim pot (Carrier Dev Increase)
RF Power Adjust:
Rear-panel trim pot (RF Power Increase)
Frequency Adjust:
Rear-panel trim (Freq Adj)
Fuse:
1/2 Amp Slo-Blo
Form Factor:
Rackmount
Power Requirements:
AC mains (IEC inlet, no power cord included)
Seller Notes:
No power cord included. Unit is sold as pictured.
Country/Region of Manufacture:
United States
Application:
Satellite ground station IF modulation, satcom uplink
Condition Notes:
3dbm Inc 70FMO 70 MHz FM Command Modulator. Inspected and in good used condition. Front-panel meters and rotary switch intact. BNC connectors usable. No power cord included. Surface wear on chassis.