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Vintage Broadcast Gear • Electronics • Test Equipment

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Vintage Tunable RF Filter Module from Engineer/Broadcast Estate
(Excellent Condition – BNC, Pot, Switch, Internal IC/Coils)

Welcome to OLD.TIME. A beautiful rare piece straight from an engineer/broadcast estate collection.

Vintage tunable RF filter module (custom or kit-built for broadcast/test use). Blue metal box with BNC connectors (input/output), potentiometer (tuning adjustment), toggle switch (likely on/off or bypass mode), internal IC chip (7400-series logic or op-amp for switching/amplification), coils (inductors for RF tuning), capacitors, resistors, and yellow/red wire connections. Likely a band-pass/high-pass/low-pass filter or trap for rejecting interference in radio/TV/broadcast signals, or signal conditioning in test setups. Made with industrial-quality components for reliability in demanding environments.

THE BIG PLUS: Excellent condition – clean, no corrosion or damage, internals look pristine. From the same engineer/broadcast estate as previous items – look for other related vintage broadcast gear, test equipment, and electronics in my store from this estate, you could find treasures!

Key Features

Condition & Testing

Cosmetic Condition: Excellent pre-owned. Box clean, internals pristine, no rust, loose wires, or burnt components. Components look high-quality and well-assembled. Light storage wear only – adds authentic vintage character. Handled carefully for photos.

TESTING RESULTS

Visual inspection & physical check:
EXCELLENT & APPEARS FUNCTIONAL!
Components intact, no damage. I did not test electrically. Sold as-is, no returns.

What the Images Show

Specifications

Type: Tunable RF Filter Module
Manufacturer: Unknown / Custom (vintage broadcast style)
Components: IC chip, inductors (coils), capacitors, resistors, pot, switch, BNC connectors
Material: Blue metal box, PCB board
Country of Origin: USA / Canada (typical for broadcast gear)


IMPORTANT DISCLAIMER – SOLD AS-IS

This is a vintage broadcast/RF module sold in excellent condition for collection, display, restoration, or historical interest only. I performed visual examination only – no electrical testing. Sold as-is, no returns. Buyer assumes all risk related to age, condition, and suitability. No warranty on performance or functionality. Please review photos and ask questions before bidding/buying.

SHOP WITH CONFIDENCE

OLD.TIME is an experienced seller specialized in secure shipping of delicate and vintage models. Curators of timeless model trains, diecast, slot cars, scientific instruments, and collectibles since years gone by.

Your module will be double-boxed and heavily padded for safe arrival.

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Seller only – internal item data (do not publish)
Item specifics:
- Brand: Unknown / Custom (vintage broadcast style)
- Model: Tunable RF Filter Module
- Era / Period: Mid-20th century vintage
- Country of manufacture: USA / Canada (typical for broadcast gear)
- Dimensions: Compact blue box (~4-6 inches)
- Weight: ≈ 1 lb
- Color: Blue metal box
- Original or Reproduction: Original / Custom-built
- Condition: Excellent – clean, no damage
- Components: BNC connectors, pot, switch, IC, coils, caps, resistors

Working title ideas (max 80 characters):
- Vintage Tunable RF Filter Module Broadcast Estate Excellent REF J33
- Vintage Blue Box RF Module w/BNC Pot Switch Coils IC REF J33
- Rare Broadcast RF Filter Module from Engineer Estate REF J33