Protek U2000A Universal Frequency Counter

Description

Protek U2000A s/n U20003216
Up for your consideration is an excellent Protek/Hung Chang U2000A universal frequency counter.
General Description:
This Protek model U2000A (sometimes called a B-2000/A) is an 8-digit 2000 MHz universal frequency counter with a high-stability OCXO for accurate frequency measurements.
Basic Specifications
*
FREQUENCY RANGE:
Channel A and B:
Low: 0.1 Hz to 10 MHz.  HI mode: 10 MHz to 100MHz (AC and DC coupled). Note: Channel B has no HI mode
Channel C:
90 MHz to 2000 MHz
INPUT SENSITIVITY:
Attenuator 1/1 = 25 mVrms ~ 1 Vrms (0.1 Hz to 100 MHz).
Attenuator 1/10 = 250 mVrms ~ 10 Vrms (0.1 Hz to 100 MHz)
MAX INPUT:
Channel A and B:
250 Vpk (AC and DC) at 1MΩ
Channel C:
3Vrms at 50Ω
* A more detailed specification list can be found in the operation manual.
Physical Condition:
This unit is in excellent condition as you can see from the photos.
It has its original feet and tilt bale. Front panel is excellent with no damage.
Internal circuitry is unmodified and
very
clean.
Electrical Operation:   Aligned and working.
I used both the U2000A’s internal 10MHz reference output and a calibrated HP 8640B (not included) to test the stability and accuracy.
It was also compared to my calibrated RACAL DANA 1992 counter in all measurements and did quite well in terms of its stability and accuracy.
This universal counter will include a .pdf version of the operating manual and an AC cord.
All cables and other test equipment shown and used for test/photographic purposes are not included.
My Selling Guidelines
Auction Policy
Your bid is a contract.  Place a bid only if you are serious about buying this item.  If you are the winning bidder, you are willingly and knowingly entering into a legally-binding contract to purchase this item.  If I am unable to establish contact with the winning bidder within three (3) business days of the end of the auction or if payment is not received within five (5) business days, this item will be forfeited and offered to the next highest bidder or relisted at my sole discretion.
Payment
I prefer payment through PayPal, which lets me receive your payment instantly and ship your item sooner.  Please make sure that your address is "confirmed" with PayPal before making payment.
Shipping
Your item will ship within 3 business days after I receive confirmation of your payment from PayPal.  Your item will be well packaged and shipped by either UPS Ground, USPS Priority Mail, USPS Parcel Post, or USPS First Class Mail at my discretion. If a specific delivery service is required, please contact me and make arrangements before bidding or buying.
Questions
If you have any questions or concerns, please address them well before the auction ends and/or you place your bid.  I consider myself a fair and reasonable individual. I reserve the right to review feedback and determine to cancel bids from users with excessive negative feedback (especially for non-payment).
Returns
Because of the actions of a few "parts swappers" out there; returns will not be accepted.
Feedback
Appropriate feedback will be left upon completion of auction.