About Us

Test Cal Instruments is Owned and operated by Paul Booth in Diamond Bar, Southern California , just 30 minutes east of Los Angeles and 30 minutes north of Orange County. We also have another location (Commercial warehouse and Lab) in Irvine CA .  The company was formerly named Solo Enterprises and has been in business for about 13 years. Test Cal Instruments specializes in repair, calibration, rental, parts and sales of  test equipment primarily spectrum analyzers and particularly HP AGILENT 856* and 859* series Analyzers. We also sell various brands of other Spectrum Analyzers, Network analyzers, Signal Generators/sweepers namely the anritsu wiltron line of 68xxx and 69xxx and mgxxx signal generators. 40 and 50 ghz mainly.

We also sell various types of other test equipment IE: function generators, counters, power meters, sensors, Stanford Research Systems equipment, etc,,,

The company currently consists of 3 members including the CEO Paul Booth ,Chad Mcmillin ,the master tech and a business partner Greg Shlaen of GS Test Equip. Inc. who is involved as a partner on some joint deals.

Our Calibrations  are all NIST traceable since all of our equipment is under NIST certified Calibration. We provide a Nist traceable Cal Certificate and sticker on all units for sale and have the lowest rates and among the best calibrations for 856* and 859* series analyzers in the world. . Most units perform like new when done since we run all alignments and adjustments.

Our Repairs generally have a 2 to 3 day turnaround time and are the lowest priced you will find.

We also have an extensive parts supply for 856* and 859* analyzers ,836xxx signal generator/sweepers and anritsu 68xxx signal generators as well as some SRS equipment. Rentals are also very low priced compared to the industry standard. We have many references around the world of our outstanding customer service and professionalism. Our goal is to make every customer a return customer!

About half of our business involves Importing and Exporting to every country you can think of. We accept Paypal, Bank Wire transfer , Direct Deposit, Cashiers Check , and Money Order ,  . We accept Purchase Orders from Universities and Large Corporations as well as other Dealers.  We Ship with  FEDEX , DHL  and USPS EMS and can always bill your account as the receiver. Our Packaging is among the best in terms of safety. Fragile Items are usually double boxed and everything is fully insured.

We buy all sorts of Test Equipment Pieces including working and defective Spectrum analyzers, network analyzers, counters,signal generators , power meters/sensors etc… We pay top dollar for parts and defective systems and have no limit on what we can buy. We are always looking for large lots up to 100,000$ or more. Our ebay username is TESTCALINSTRUMENTS and there is a link to our online auctions at the top right of this site. If you would like to Buy something from our website or Sell your inventory please contact us by email or phone to negotiate .

Contact info :

Test Cal Instruments

Paul Booth

23603 Decorah Rd

Diamond Bar, CA 91765


+1(909)576-4320 cell


Skype username : yngvae2