Mini Receiver

FB7-NX - National RF, Inc

In about 1935, the National Radio Company of Malden, Mass., brought out a “hot” high frequency receiver, called the FB7, and the subsequent FB-7X. It featured a super-hetrodyne design with plug-in coils that gave it a broad frequency range. The “X” model also incorporated a crystal filter in the intermediate frequency section, thus giving it additional selectivity. The receiver was viewed by radio amateurs as a technological breakthrough, and it was also used commercially for point to point high frequency communications. As the receiver did not have an internal RF amplifier section, a separately tunable RF amplifier was later provided in a separate enclosure for additional performance capabilities. Now, National RF, Inc., is resurrecting the fabled receiver name with an all solid-state, hot mini receiver, which also utilizes plug-in coils to cover the HF spectrum. The mini-receiver is designed for use by radio amateurs as well as serious short-wave listeners, and allows reception of AM, CW, and SSB signals. It incorporates a super-hetrodyne design with a dual gate FET built-in RF preamplifier and a ceramic filter for selectivity, often required when used in a crowded amateur radio band. In addition, the receiver has a buffered rear panel output of the high frequency oscillator for use with either a frequency counter for exact receive frequency display, or for interface with an outboard transmitter. A rear panel jack is also provided for muting the receiver when a transmitter is placed into the transmit mode. And, the receiver is small enough to fit into carry-on luggage and taken on trips when it is desired to “keep an ear” on amateur radio or other high frequency activity. The receiver utilizes rear panel plug-in coil assemblies which contain the RF amplifier, mixer, and oscillator tuned circuits. Each plug-in coil assembly also comes with a separate dial scale, which is inserted onto the front panel for displaying the tuned frequency. A very smooth 6 to 1 planetary drive is used for tuning the receiver. Other front panel controls include RF preamplifier peak, volume control, Beat Frequency Oscillator adjustment, and RF gain control. Other switches include filter bandwidth, AM/CW/SSB selection, Power, and a general coverage/band spread control for certain plug-in assemblies. The receiver is intended to drive head-phones via a rear panel jack, but has sufficient output to drive a small external speaker.

High Voltage, Continuity & Hipot, Cable & Wire Harness Test Systems

CableEye HVX, HVX-21 - CAMI Research Inc. (CableEye®)

Fast ● Simple ● Precise Advanced wiring analyzer scans for continuity (opens, shorts), miswires, resistance, capacitance, components (resistors, diodes, LEDs, capacitors) dielectric breakdown, insulation resistance, intermittent connections HVX (Item 829) 1500 Vdc, 1000 Vac HVX-21 (Item 829A) 2100 Vdc, 1200 Vac For diagnostic and Pass/Fail Testing — Permits expanded testing (compared to models in our low voltage product line) for insulation resistance (IRI) and dielectric breakdown (DWV). All CableEye testers are suitable for production, fault diagnosis, QC (Quality Control), assembly, and prototyping of standard or custom cables. Each combines test, fault location, design, documentation, labeling, and database storage in one instrument. Tests can be performed on long cables (with or without connectors) or no cables (e.g. connectors, backplanes, PCBs, components). Standard Features & Benefits:

• USB certified, PC-based tester for a versatile, fast, robust system with long life-cycle.
• Multilingual, dynamic, graphic-rich display (netlist & wiring schematic) provides clarity and speeds diagnostics.
• 128 Test Points, expandable to 1024 providing flexibility as your product line changes.
• User-selectable voltage to each connection group in the cable simplifies an otherwise complex process, accelerating testing.
• Programmable Ramp Up, Ramp Down, Dwell Time (same as Test Time), Trip Current, and Trip Delay (same as Soak Time) adds versatility.
• Current leakage detected during HV test phase provides a measure of insulation resistance up to 1 GΩ (HVX) and 5 GΩ (HVX-21) - any leakage current exceeding a preset limit reveals the presence of moisture, flux, or other contamination on exposed contacts.
• Real-time screening for intermittent connections for pinpointing elusive faults and improving quality.
• Automation scripting in a simple, intuitive language allowing non-programmers to reduce operator error by automating repetitive steps.
• Pop-Up Work Instructions. choose the exact amount of detail, imagery, language and automation you need to ensure your work instructions and tests are carried out flawlessly.
• Flexible tolerancing: optionally define as percentages or absolute terms, as well as asymmetrically (e.g. +0%/-10%) for improved yields.
• Barcode-tracking & archival data-logging to achieve error-proof test process and improved traceability & productivity.
• Print PASS/FAIL labels, test reports (with or without color wiring schematics/netlists) and log reports to satisfy ISO9000 reporting requirements.
• Compatible with laptop and touchscreen PCs for fieldwork and rack/off-bench mounting.

Includes: CB29 board set (Item 759) for bare wire connections; comprehensive PC software with Database of >200 standard cables; 2 yr Product Support Subscription comprising Warranty, free tech support, and free software upgrades. Select Add-On Options: Hardware: 128-point Expansion Modules (attach to base); 4-Wire Kelvin Resistance Measurement, 1 mΩ at 1 A; Advanced Measurements; External Measurement Instrument Port (e.g. 10 GΩ Isolation at 100 V); Remote Control Connector for Deadman Switch; Environmental Sensor Software: PinMap™ fixture editor, Connector Designer™ connector editor, or Autobuild™ guided assembly modules camiresearch.com |@CAMI_CableEye |+1.978.266.2655