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  Sphere Research Corporation
3394 Sunnyside Rd.
West Kelowna, BC, Canada V1Z 2V4
Phone: +1 (250) 769-1834
FAX:+1 (250) 769-4106

A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES!

JUST SCROLL DOWN TO SEE EVERYTHING
 
CLICK to see Parts By the FootCLICKCLICK to SEE!
 Parts by the Foot!
Now OPEN, our PRODUCTION PARTS WAREHOUSE
Literally millions of parts available at great prices!
CLICK to visit the parts warehouse! CLICKCLICK HERE
CLICKTo Visit The Parts Section
Sadly, General Radio is no more... CLICK to visit GenRad
Click to visit GenRad's own website for news about Teradyne

Some GR products will be manufactured in the future
by IET Labs, see there website here:

Click to visit IET Labs
Click to visit IET Labs

Test Equipment Navigation
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TEKTRONIX
Used Tektronix
Equipment

Go to the Tek EquipmentEquipment
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Hewlett-Packard
Used HP
Equipment

Go to the HP EquipmentEquipment
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FLUKE
Philips
Used Fluke + Philips
Equipment

Go to the Fluke EquipmentEquipment
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GENRAD
Used General Radio
(Genrad) Equipment
Go to Microwave Power MetersPower Meters
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NEW STUFF, CLICK to see!NEW STUFF, CLICK to see!NEW STUFF, CLICK to see!
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*Optics*
Optical Equipment

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TUBETUBETUBETUBETUBETUBE
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Visit classic old gear from Long Ago!
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GR-874 Connectors/Adaptors
General Radio Test Equipment
GR attenuator

CLICK for bigger PIC!
go right to the catalog! Skip the INTRO, Go RIGHT to the CATALOG!

GenRad General Radio / GenRad Equipment:
General Radio was one of the first RF and Test Equipment manufacturers, and produced a wide range of other unique items including low loss connectors, bridges, audio wattmeters and standard reference components. We sometimes get used or new GR items to list here. There quality is exceptionally high, and the equipment is very rugged and well constructed.

* NAVIGATION: To make your life easier, and help you find exactly what you want, we have broken the on-line equipment catalogs into smaller sections. Just CLICK on the item you are looking for at the left, to see the matching catalog. Large graphical catalogs are a bit SLOW, so please give them a bit of time to load. The top header of each catalog is largely the same, so don't think you are stuck in one place!

You can order anything here just by picking up the phone, and calling (250) 769-1834 during normal office hours, 8:30AM to 4:30PM PST, or FAX to (250) 769-4106. OR, Email your order to Susan CLICKHERE.

* E-Mail Susan if you want a quote for shipping to other destinations, or for something heavy. Sorry, we can't safely send most individual small parts in a regular letter envelope, they get destroyed by the automated handling equipment. Sometimes we can ship very rugged parts in a small padded envelope by letter post. Ask Susan.

*There is a packing charge for large or heavy equipment, see the FAQ for details.

*If we have your valid data on file, you can just click on the ORDER email link to place an order and indicate your approval to bill, and we will do the rest. We keep your active information for ONE YEAR for your convenience.

*If this is the first time you have dealt with us, you can phone +1 (250) 769-1834 or FAX +1 (250) 769-4106 to supply the billing info, or send it by the email link, as you prefer. We accept VISA/MC, international money order, Paypal (to Susan@Okanagan.net), and bank wire transfer. Please note that there are transaction fees with Paypal and wire transfer payments, the wire transfer fee is frankly horrifying.

We accept VISA/MC or international money order

* CONDITION: To answer your questions, YES, we completely check and inspect all used equipment, and do not offer any we feel is substandard. That gear is normally scrapped, broken down for parts, or may get offered as-is in the HOT DEALS section, with the unit's condition clearly identified. If there are any marks or detracting features, we clearly state them in the listing. Before shipment, we burn in the equipment for 24 hrs. again and re-check to be sure it is good prior to shipment.

* The CATALOG will appear below shortly!
Don't forget these illustrated sections take a few seconds to load, but they are worth the wait!



CATALOG: JUST SCROLL DOWN TO SEE EVERYTHING !down

Email US! Want something? Click here to e-mail us!
We accept Visa / MC for fast order processing.

MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


1381 Random Noise Generator
Random Noise Generator from GR, generates truly random noise (long life solid state source, not vacuum tube source) into a 600 ohm load (3mV to 3VRMS), with the ability to symmetically clip the signal at 2, 3, 4, or 5 times the set rms amplitude, or leave the signal unclipped. Upper frequency bandwidth (at 3dB point) can be set to 2KHz, 5KHz, or 50KHz, scope pictures show the range of noise waveforms possible, the lower frequency limit is 2Hz. Ideal for random vibration testing, and audio/noise filtering tests.
50KHz, maximum 2-sigma clipping
Excellent condition, calibrated.
Just 1
General Radio 1381, CLICK for bigger PIC!

CLICK for bigger PIC!



2KHz, infinite clipping level

Late colors
$495
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


1390B Random Noise Generator
Random Noise Generator from GR, generates truly random noise (vacuum tube source) into a 600 ohm load (0.00005-5VRMS, metered and in decade ranges). Upper frequency bandwidth (at 3dB point) can be set to 20KHz, 500KHz, or 5MHz. Ideal for random vibration testing, and audio/noise filtering tests.
Excellent condition, calibrated.
Have 2 Late Colors

1 Early Colors
Pic to come


Late colors $425

Early Colors $395
MODEL NUMBERDESCRIPTIONQTY. AVAILABLE/PRICING


1432 Resistor Decades
1432 Series Decades, CLICK for bigger PIC!
CLICK for bigger PIC!

Resistor Decadesfrom GR, late colors, excellent condition, calibrated and thoroughly overhauled. We have many different ones in stock, always changing, 4, 5 and 6 decade units in stock, 0.02% typical accuracy/decades 1K and up (3% on 1 ohm, and 0.5% on 10 ohm, 0.05% on 100 Ohm). All have low residual Zero values.

Every unit has individual cal sheet showing every value of every decade. Every unit has been fully overhauled, cleaned, and moving wiper contacts treated with De-Oxit for optimal conductivity.

Overhauled, Excellent condition, calibrated.
Available from stock:

1432L   4 Decades, 10 to 10K steps
111,100 Ohms max.
1 ea., $300

1432M   5 Decades, 1 to 10K steps
111,110 Ohms max.
1 ea., $375

1432N   5 Decades, 0.1 to 1K steps
11,111 Ohms max.
SORRY, SOLD, $375

1432P   5 Decades, 10 to 100K steps
1,111,100 Ohms max.
2 ea., $375

1432Q   4 Decades, 100 to 100K steps
1,111,000 Ohms max.
2 ea., $300

1432Y   5 Decades, 100 to 1M steps
11,110,000 Ohms max.
1 ea., $425

MODEL NUMBERDESCRIPTIONQTY. AVAILABLE/PRICING


1432J Resistor Decades
1432-J
1432J Decades, CLICK for bigger PIC!
CLICK for bigger PIC!

Resistor Decades from GR, very late production with gold terminals, excellent condition, calibrated and thoroughly overhauled. Have 0.02% typical accuracy/decades 1K and up (3% on 1 ohm, and 0.5% on 10 ohm, 0.05% on 100 Ohm). All have low residual Zero values.

Every unit has individual cal sheet showing every value of every decade. Every unit has been fully overhauled, cleaned, and moving wiper contacts treated with De-Oxit for optimal conductivity.

Overhauled, Excellent condition, calibrated.
Available from stock:

1432J   4 Decades, 1 to 1K steps
11,110 Ohms max.
4 ea., $350
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


1650-B
Ortho-null bridge from GR, late colors and revision status, excellent condition, calibrated. Does AC and DC resistance, capacitance and inductance, plus D and Q factors. Internal or external excitation source. Outer case shows some wear, but the instrument is exceptionally nice, serial number 2369.
Excellent condition, calibrated.
SORRY, SOLD
GR 1650B Bridge

Late Colors
$295
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


1840-A
1840A
OUTPUT POWER METER from GR, late colors, excellent condition, calibrated and thoroughly overhauled. Measures AC/audio signal power into 48 different impedances from 0.6ohms to 32Kohms. 5 power ranges (10dB/decade power increments) from 2mW to 20W full scale, simultaneous dB and power indication, meter scale has 18+ dB range. Works even with DC present, self-powered. One of the most sought after GR measuring tools, this is a standard in the audio and avionics business for power level measurement. Unlike many instruments, this actually provides the CORRECT LOAD as well as the correct signal scaling, and we fully check this function in every position, unit is in excellent condition.
Excellent condition, calibrated.
SORRY, SOLD
Late Colors
CLICK to see bigger PIC!
CLICK to see bigger PIC!

Late Colors
$595
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


1840-A
1840A
OUTPUT POWER METER from GR, early colors, very good condition, calibrated and thoroughly overhauled. Measures AC/audio signal power into 48 different impedances from 0.6ohms to 32Kohms. 5 power ranges (10dB/decade power increments) from 2mW to 20W full scale, simultaneous dB and power indication, meter scale has 18+ dB range. Works even with DC present, self-powered. One of the most sought after GR measuring tools, this is a standard in the audio and avionics business for power level measurement. Unlike many instruments, this actually provides the CORRECT LOAD as well as the correct signal scaling, and we fully check this function in every position.
Very Good condition, calibrated.
SORRY, SOLD
Early Colors
CLICK for bigger PIC!
CLICK to see bigger PIC!

Early Colors
$495
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING
GenRad
General Radio
1863 Megohmmeter
General Radio 1863 Megohmmeter
High performance portable General Radio Megohmmeter, with selectable 50V, 100V, 200V, 250V and 500V test excitation, capable of very high resistance measurements, in the 10 Teraohm range at the highest test voltage. Collapses into a compact, fully protected travel package, and has a HV warning light when high voltage is at the test terminals. Fully overhauled and calibrated, excellent condition. Built-in discharge function for the test sample, so it can be used with capacitors and coax cables.

Cal'd Overhauled and calibrated.

1863 Rear View
CAUTION! HIGH VOLTAGE PRESENT ON TEST LEADS!
Excellent condition, overhauled and calibrated.
SORRY, SOLD
GR 1863 Megohmeter, CLICK for bigger PIC!
CLICK for bigger PIC!

GR 1863 Megohmeter, CLICK for bigger PIC!
Late Colors
$795
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


Type 602-304
Resistance Standard Elementfrom GR, these temperature stable resistance standards are great shop references, or to use for decade box repairs, etc.. These are factory sealed new parts, and measure exactly 1.000K each, with heavy flat leads. Presumably at least 0.05% accuracy, but I cannot find any catalog frefence to these parts in GR literature.
Mint condition, factory packed new parts.
10 on hand
602 Series Resistance Elements
General Radio 602-304 1K000 Element

$39 each


874-N Adaptors
GR-874 to N Adaptors 874 to both female and male N connectors, used, very good condition, cleaned and inspected. Hard to find, great for that GR bench set up.
Cleaned, Inspected.
1 Male
1 Female
874 to N adaptors
CLICK for bigger PIC!

$44 each
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


874-BNC Adaptors
GR-874 to BNC Adaptors 874 to both female and male BNC connectors, used, very good condition, cleaned and inspected. Hard to find, great for that GR bench set up.
Cleaned, Inspected.
1 Male
1 Female
874 to BNC adaptors
CLICK for bigger PIC!

$39 each
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


874 Adaptors
GR-874 Network Adaptors
874 T, load and special adaptor fittings, used, very good condition, cleaned and inspected. Hard to find, especially the short and open standards, great for that GR bench set up.
874-TPD (874 T)

Cleaned, Inspected, Tested.
1
874 Adaptors
CLICK for bigger PIC!

$49 each
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


874 Adaptors
GR-874 Connector Adaptors

874-ELE (874 90 degree elbow)

Cleaned, Inspected.
1 of each
GR 874 Adaptors, CLICK for bigger PIC!
CLICK for bigger PIC!

$39 each
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


874-G6
6dB/2X GR-874 Attenuator double ended GR-874 connectors, sweep tested, good to 1Ghz, excellent condition. Hard to find, great for that GR bench set up.
Sweep Tested/Cal'd.
6 on hand
CLICK for bigger PIC!
CLICK for bigger PIC!

CLICK for bigger PIC!
CLICK for bigger PIC!

$45
MODEL NUMBERDESCRIPTIONQTY. AVAILABLEPICTURES/PRICING


874-G14
14dB/5X GR-874 Attenuator double ended GR-874 connectors, sweep tested, good to 1Ghz, excellent condition. Hard to find, great for that GR bench set up.
Sweep Tested/Cal'd.
6 on hand
CLICK for bigger PIC!
CLICK for bigger PIC!

CLICK for bigger PIC!
CLICK for bigger PIC!

$50 each


IMPORTANT !
Graphical logos and trademarks are the property of their respective owners, including Tektronix, Fluke, RCA, TI, GE, General Radio and Hewlett Packard, and are used here merely to unambiguously identify the products. Sphere Research IS NOT a factory authorized distributor for any of the product lines indicated.
Return to Sphere's Test Equipment Home Page Return to Sphere's Test Equipment Home Page
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