General Radio Precision Slotted Line - 900 LB, US $900.00 – Picture 0

General Radio Precision Slotted Line - 900 LB, US $900.00 – Picture 1

General Radio Precision Slotted Line - 900 LB, US $900.00 – Picture 2

General Radio Precision Slotted Line - 900 LB, US $900.00 – Picture 3

General Radio Precision Slotted Line - 900 Lb

US $900.00

Chandler, Indiana, United States
Apr 22nd

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General Radio, Precision 1640-A Slotted Line - 900 LB As the basic tool in coaxial impedance measurements, the slotted line remains unsurpassed; its accuracy is absolute, since its standard impedance is the characteristic impedance of a coaxial line. The inherent accuracy of the slotted line, as well as its stability and broad bandwidth, led to the investigation of the limitations of this instrument for low VSWR measurements. As might be expected, we found the limiting factors to be not in the slotted line itself but in the noise level and limited scale expansion of commercial standing-wave indicators. This conclusion led to the development of the Type 1640-A Slotted Line Recorder System. The noise figure of the transistorized Type 1640-A System is held to less than 5 dB, and the high signal-to-noise ratio at the crystal detector (normally over 80 dB) is preserved through the amplifier chain and the recording process. The recording of VSWR’s as low as 1.001 with excellent signal-to-noise ratio is entirely practical. Features: · The precision slotted line uses an air-dielectric coaxial line, with an outer conductor ID of 0.5625 inch, made to extremely close dimensional tolerances. · A new probe assembly comprised of an externally adjustable probe, with calibrated penetration depth, and a probe turner. · A protective cover · A vernier scale and, in addition, a micrometer drive for fine resolution. · Quick conversion · The slotted line can be calibrated absolutely with the type 900-BT Connectors to a much higher degree of accuracy. ~~~Used, some dried tape residue on ruler. Scratches on wooden case. See photos for condition. PAYMENT: Payment is required within 2 days (48 hours) of purchase. We reserve the right to cancel your order if the payment is not made within 2 days of checkout. Paypal is required. ERI reserves the right not to accept Paypal payments from an unconfirmed buyer. (i.e. address is not confirmed by Paypal.) SHIPPING: See item description for shipping details. We ship FedEx 5 days a week. USPS is an option as well. Insurance is required on larger/expensive items. CUSTOMER SERVICE AND RETURN POLICY: Your satisfaction is very important to us, we want you to be happy with the purchase. Please inspect all photos carefully and consider any and all flaws noticed and/or stated before bidding. More photos are always available on request. All items are sold "AS-IS" and untested, unless otherwise stated. If you feel the description and/or pictures are vague as to the condition of the item, email BEFORE bidding and ask for more info. If the item is not as described in the Auction or Store listing, return the item(s) within 2 weeks (14 days) of receiving the item(s) and we will refund your payment. ERI operates Mon-Fri 7:30am-4pm CDT, any questions over the weekend will be answered Monday. Email us on eBay messenger or call (812) 925-6000 and ask for the eBay department (ext. 262). Please contact us with any questions.

Condition:

Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...

Brand

General Radio