HEATHKIT IT - 12 VISUAL - AURAL SIGNAL TRACER & TEST PROBE
Item History & Price
| Reference Number: Avaluer:4322292 | UPC: Does not apply |
... NICE CONDITION WORKING HEATHKIT IT-12 VISUAL-AURAL SIGNAL TRACER & TEST PROBE NICE CONDITION WORKING HEATHKIT IT-12 VISUAL-AURAL SIGNAL TRACER & TEST PROBE
Photo is the actual HEATHKIT IT-12 Signal Tracer
This is a Heathkit Model IT-12 Visual and Aural Signal Tracer. This instrument is used to trace both audio and RF signals through a circuit to determine where a fault is. The silver probe has a switch th...at selects either audio or RF. When RF is selected, a diode detector and filter is placed in the circuit.
The audio or detected signal is passed to a 2-stage vacuum tube amplifier with a gain control mounted on the center left of the front panel (labeled Level). The amplified signal is then passed to a vacuum tube driver stage that drives the internal speaker.
A green "eye tube" in the lower left of the front panel gives a visual indication of the audio level. Stronger signals make the green eye segments come closer together.
The speaker and its audio output transformer can be used independent of the signal tracer to diagnose vacuum tube audio amplifiers by replacing the unit under test transformer and speaker. When the signal tracer is turned off, you can use the three binding posts in the lower right of the front panel to connect the internal output transformer to the circuit under test. The internal speaker is always connected to the transformer.
Manual not included.
Buyer to add $14. shipping (USA).
QUESTIONS? Please contact me before bidding.PAYMENT INFORMATION: You can either use the "PAY NOW" button at the end of the auction or wait for me to send you an invoice. IF YOU DON'T HAVE OR USE PAYPAL, CONTACT ME FOR PAYMENT METHODS TO PAY ON PICKUP. I try to ship most items within 48 hours of payment. I usually accept PayPal being shipped to confirmed addresses only. PAYPAL NOW REQUIRES A SIGNATURE UPON DELIVERY FOR ALL SHIPMENTS OVER $750. INTERNATIONAL BIDDERS: I accept all PayPal payments from International Bidders for amounts up to $250. For larger amounts, email me. PayPal payments over $500. in value sent only by Express Mail with tracking, insurance, and delivery signature.SELLING INFORMATION: I try to inspect most of the equipment I list for auction, and to describe each completely & carefully. However, since some of the items can be over 60 years old, all items are sold "as is". Since I don't know the characteristics or condition of your equipment, no returns or adjustments on vacuum tubes. Almost every older electronic item will benefit from a careful alignment and cleaning or other restoration. Image may not be unique. I do not divulge reserve prices. Shipping charge may not include AK or HI. Some international shipping costs, especially to ITALY, may be higher than listed. Please contact me directly for any further information.
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Photo is the actual HEATHKIT IT-12 Signal Tracer
This is a Heathkit Model IT-12 Visual and Aural Signal Tracer. This instrument is used to trace both audio and RF signals through a circuit to determine where a fault is. The silver probe has a switch th...at selects either audio or RF. When RF is selected, a diode detector and filter is placed in the circuit.
The audio or detected signal is passed to a 2-stage vacuum tube amplifier with a gain control mounted on the center left of the front panel (labeled Level). The amplified signal is then passed to a vacuum tube driver stage that drives the internal speaker.
A green "eye tube" in the lower left of the front panel gives a visual indication of the audio level. Stronger signals make the green eye segments come closer together.
The speaker and its audio output transformer can be used independent of the signal tracer to diagnose vacuum tube audio amplifiers by replacing the unit under test transformer and speaker. When the signal tracer is turned off, you can use the three binding posts in the lower right of the front panel to connect the internal output transformer to the circuit under test. The internal speaker is always connected to the transformer.
Manual not included.
Buyer to add $14. shipping (USA).
QUESTIONS? Please contact me before bidding.PAYMENT INFORMATION: You can either use the "PAY NOW" button at the end of the auction or wait for me to send you an invoice. IF YOU DON'T HAVE OR USE PAYPAL, CONTACT ME FOR PAYMENT METHODS TO PAY ON PICKUP. I try to ship most items within 48 hours of payment. I usually accept PayPal being shipped to confirmed addresses only. PAYPAL NOW REQUIRES A SIGNATURE UPON DELIVERY FOR ALL SHIPMENTS OVER $750. INTERNATIONAL BIDDERS: I accept all PayPal payments from International Bidders for amounts up to $250. For larger amounts, email me. PayPal payments over $500. in value sent only by Express Mail with tracking, insurance, and delivery signature.SELLING INFORMATION: I try to inspect most of the equipment I list for auction, and to describe each completely & carefully. However, since some of the items can be over 60 years old, all items are sold "as is". Since I don't know the characteristics or condition of your equipment, no returns or adjustments on vacuum tubes. Almost every older electronic item will benefit from a careful alignment and cleaning or other restoration. Image may not be unique. I do not divulge reserve prices. Shipping charge may not include AK or HI. Some international shipping costs, especially to ITALY, may be higher than listed. Please contact me directly for any further information.
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