The model AS204-80 GaAs IC SP4T switch combines high isolation to provide greater sig- nal path separation and reduced RF leakage with non-reflecting ports to eliminate the need for external terminations while providing 50 W output impedance. Covering the frequency range of DC to 3.5 GHz, the switch provides low loss for greater signal strength and better system performance in basestation switch matrices. The new switch features a +5 V integrated driver to simplify circuit layout and reduce space requirements. Key specifications operating at 0.9 GHz include 45 dB isolation, 0.5 dB insertion loss and at 1.9 GHz, 37 dB isolation and 0.55 dB insertion loss. The AS204-80 is available in a miniature SSOP-16 plastic package. Price: $3.65 each (5000).
Alpha Industries, Haverhill, MA (978) 241-7000.
Circle No. 216
Portable, Dry Attenuators
The 600-A-QFFN series is rated at 600 W over a frequency range of DC to 2.4 GHz. SWR is 1.1 (max) to 1 GHz and 1.25 (max) to 2.4 GHz. Standard attenuation values are 3, 6, 10, 20 and 30 dB with others available upon request. The unit comes with a thermally insulated carrying handle for easy transportation. The QC connector design allows for easy field replacement and changing of input and output connectors as well as offering about 30 different QC connectors such as N, UHF, LC, 7/16 and EIA types. Weight: 21.5 lb. Delivery: two to four weeks.
Bird Component Products Inc. (BCP), Largo, FL (727) 547-8826.
Circle No. 217
This line of quick release test adapters incorporates push-on mating with an integrated locking mechanism to prevent mated surfaces from separating due to cable weight and handling. The locking outer contacts are heat-treated beryllium copper. The quick-release sleeves are stainless steel for added strength and durability to handle multiple matings.
Connectronics Inc., Edinburgh, IN (812) 526-8801.
Circle No. 218
Full Band PCS Duplexer
This full band PCS duplexer offers co-channel rejection which is > 50 dB and passband inser- tion loss for both transmit and receive channels is less than 2.25 dB. Passband SWR is 1.5. Size: 4.50" x 1.40" x 0.65".
Eastern Wireless TeleComm Inc., Salisbury, MD (410) 749-3800.
Circle No. 219
SMD Molded Wire Wound Ferrite Chip Inductors
The model CF453232 (1812-dimensions are 4.5 x 3.2 x 3.2 mm) and CF322522 (1210-di- mensions are 3.2 x 2.5 x 2.2 mm) SMD molded wire wound ferrite chip inductors are designed for low to mid frequency signal devices such as computers and communications products. The 1812 has an inductance range of 0.1 to 1000.0 mH and usable frequency is 2.5 to 300.0 MHz. Inductance range of the 1210 is 0.12 to 220.00 mH and usable frequency is 7 to 500 MHz. Both models come with tape-and-reel packaging and are ideal for pick and place equipment. Price: 10¢/each. Delivery: eight weeks (ARO).
Frontier Electronics, Simi Valley, CA (805) 522-9998.
Circle No. 252
Temperature Compensated RF Power Detectors
The model LTC5505-1 and LTC5505-2 RF power detectors offer > 40 dB dynamic range for 300 MHz to 3 GHz applications. Each requires 60 percent of the PCB space needed by a discrete design, consumes nine times less supply current and, compared to integrated solutions, minimizes system design iteration with the factory guaranteed precision RF parameter limits and temperature compensated performance. Applications include wireless data modems, wireless local loop and broadband systems, as well as multi-mode cell phones and wireless infrastructure. The LTC5505-1 operates with input power levels from -28 to +18 dBm. The LTC5505-2 operates with a lower input power level (high sensitivity) from -32 to +12 dBm. Each consumes only 500 mA of supply current and operates from 2.7 to 6.0 V of supply voltage. A power saving shutdown mode reduces supply current to less than 2 mA. Price: $1.20 (1000).
Linear Technology Corp., Milpitas, CA (408) 432-1900.
Circle No. 222
This high performance X-band attenuator is ideally suited for airborne radar system re- quirements. The attenuator provides 60 dB of attenuation range with 8 bits of digital control resulting in a resolution of 0.25 dB. Accuracy of attenuation performance, which includes temperature variation, is ±0.3 dB up to 40 dB and ±0.7 dB up to 60 dB. It can handle up to 100 mW of input power without any performance degradation and exhibits switching speeds of significantly less than 500 ns. In addition to the digital control, an analog input is also provided as a standard feature. The attenuator operates over a temperature range of -54° to +90°C. Size: 1.34" x 1.34" x 0.50".
Herley Industries, Farmingdale, NY (631) 630-2000.
Circle No. 220
The HRF-AT4000 family of high performance attenuators is the first to offer both serial and parallel interface architectures. In addition, the five- and six-bit attenuators are available in 4 x 4 mm (16-pin LPCC™ surface-mounted) packages to enable applications requiring high accuracy, speed and extremely low power consumption such as cellular basestations and handset products. The SOI CMOS-based attenuators operate on a single positive supply voltage and have exceptionally high isolation resistance. Additional SOI benefits include a unique combination of integrated CMOS control logic and ESD protection, and a frequency range of DC to 4 GHz.
Honeywell, Morristown, NJ (973) 455-2000.
Circle No. 254
Cavity Bandpass Filters
This line of broadcast quality, ultra-narrow bandpass cavity filters for 900 MHz STL receivers. Designed as preselector filters, these cavities offer low loss, steep skirts and extreme ruggedness. Typical uses include rejection of other STL signals, paging services and cell phone band noise. Each filter is sold pretuned to the user's exact STL frequency. Ultimate rejection is better than 80 dB. Filters are available for both US and Canadian STL bands.
Integrated Microwave Corp., San Diego, CA (858) 259-2600.
Circle No. 221
The SHP7609 series hermetic feedthru offers an economical alternative for use with Wiltron V connectors. These feedthrus provide superior hermetic reliability and are readily available. The design of this feedthru also provides for easier assembly and soldering repeatability. These feedthrus are available in standard or custom headlengths.
Special Hermetic Products Inc., Wilton, NH (603) 654-2002.
Circle No. 251
The model AQA-1902 quadrupler converts a 1.9 to 2.0 GHz input to a 7.6 to 8.0 GHz out-put. Input levels from -2 to +2 dBm are converted to a typical output level of +14 dBm, with a typical fundamental suppression of 60 dBc. Designed for communications applications, the quadrupler is a unique design, available in a connectorized and carrier outlines. The supply requirement is +5 V at 180 mA.
Marki Microwave Inc., Morgan Hill, CA (408) 778-4200.
Circle No. 223
The model ADCH-80 broadband 50 to 8000 MHz RF choke is housed in an ultra low pro-file 0.108" patent-pending package. Typically, the unit displays low 0.3 dB insertion loss, 1.1 SWR and 1.8 mH inductance at 50 mA when operated at -20° to +85°C (max). Parasitic capacitance is low at 0.1 pF (typ). This circuit outperforms previous generation units by providing high RF impedance over a very broad frequency range. Price: $2.75 (10-49).
Mini-Circuits, Brooklyn, NY (718) 934-4500.
Circle No. 224
This 360° turnable, right-angle coaxial connector is custom-made for automotive applications with small spaces or limited accessibility. The unique turnable connector is resistant to wide temperature range variations (-40° to +100°C) and features small dimensions for easy installation. The connector is available in all FAKRA codings from A to Z. The rotation ability eliminates the need for different angle configurations of the same keyed part. Designed for three cable groups, RG 174, RG 58 and RTK 031, the connector meets all of the European FAKRA specifications.
Rosenberger of North America LLC, Lancaster, PA (717) 290-8000.
Circle No. 225
Bandpass Cavity Filter
The model 50-209-40XX-000 bandpass cavity filter is designed to be used in fiber optics SONET-SDH, OC-768 and optical clock data recovery applications. The model has a rugged design and is ultra-stable over an operating temperature range of 0° to +70°C. The new filter features high Q, low insertion loss at 5.0 dB (max), multiple launch configurations and wire bonding applications. Size: 27.9 x 12.7 x 12.7 mm.
TRAK Microwave, Tampa, FL (813) 806-3000.
Circle No. 228
High Frequency Chip Resistors
The SOTA RF series 0402 of thin-film chip resistors is designed specifically for use in microwave and RF applications. These lightweight resistors provide extremely low return loss in frequency ranges to 16 GHz, making them effective in critical RF and microwave applications. These devices are characterized for optimum SWR, which makes them ideal for use in circuitry requiring superior microwave and RF performance. Size: 0.040" x 0.025". Price: $1 each. Delivery: 12 to 14 weeks (ARO).
State of the Art Inc., State College, PA (814) 355-2715.
Circle No. 226
Surface-mount Three-way Power Divider/Combiner
The model P3D2025 SYNSTRIP® surface-mount three-way power divider/combiner is designed to meet requirements of emerging Bluetooth, WLAN, 3G and ISM technologies. This model operates in the 2000 to 2500 MHz frequency range with low insertion loss (< 0.3 dB), high isolation (> 20 dB), low SWR (< 1.3), excellent amplitude tracking (< 0.3 dB) and phase tracking (< 3°). The maximum power rating for this model is 20 W with a mismatch of 1.5:1. Size: 0.650" x 0.480" x 0.075".
Synergy Microwave Corp., (973) 881-8800.
Circle No. 227
Coaxial BNC Jack Connector
The model UCBJ224 gold plated 75 W circuit board BNC jack connector is designed for high frequency, broadband, high data rate applications. The four-post construction with a longer center lead enables the user to center the part and quickly orient the legs to their mating plated thru holes. The legs are highly solderable and provide for a PCB standoff that facilitates the flow of cleaning solutions after solder operations. The design is true 75 W and features a solid polytetrafluoroethylene dielectric for high propagation velocity and tolerance-controlled impedance matching thru a wide range of temperatures and frequencies.
Trompeter Electronics, Westlake Village, CA (800) 982-2629.
Circle No. 229
The 2.92 series coaxial connectors provide high repeatability and are compatible with K, SMA and 3.5 mm series connectors. The series is designed for demanding applications at DC to 40 GHz frequencies and the -55° to +125°C temperature range. Featuring type 303 stainless steel bodies that can be passivated or gold plated, and gold plated BeCu contacts, the connectors require only 8 to 10 in-lbs. coupling nut tightening torque and are rated for ≥ 500 matings.
Tru-Connector Corp., Peabody, MA (800) 262-9878 or (978) 532-0775.
Circle No. 230
Linear RF Mixers
The SMJ diode mixer line complements the company's existing SME line of highly linear diode mixers. This family of linear RF mixers features high IP3 performance (up to +29 dBm), broadband frequency coverage (covering 500 kHz to 2400 MHz), low LO power versions, low conversion loss and high isolation. The company's extensive reliability testing ensures complete customer satisfaction.
WJ Communications Inc., San Jose, CA (408) 577-6200.
Circle No. 231
Broadband RF Amplifier
The model 100A400 broadband RF amplifier is specifically designed for the rigors of bulk current injection (BCI) test applications in the automotive industry. It has excellent load tolerance, making it ideal for the harsh test environments typically encountered in BCI testing, where SWR can exceed 6.0. The 100 kHz to 400 MHz, 100 W amplifier is also perfectly suited for a variety of laboratory applications requiring instant bandwidth, high gain and moderate power output, such as antenna and component testing, wattmeter testing and as a driver for high power amplifiers.
Amplifier Research (AR), Souderton, PA (215) 723-8181.
Circle No. 232
Power Amplifier Module
The model RM805 fully matched 28 pin LCC surface-mount power amplifier module is designed for mobile units operating in the 806 to 849 MHz frequency band. All active circuitry is contained in the module, which includes on-board CMOS controlled bias circuitry as well as input and interstage matching circuits. The output match is realized off-chip within the power module package to optimize efficiency and high power performance into 50 W. Size: 10.00 x 13.97 x 1.70 mm.
Conexant Systems Inc., Newport Beach, CA (949) 483-4600.
Circle No. 233
HBT MMIC Power Amplifier
The model HMC327MS8G heterojunction bipolar transistor (HBT) MMIC power ampli- fier operates between 3 and 4 GHz and is packaged in a surface-mount 8 leaded MSOP package with an exposed base for improved RF and thermal performance. It provides 21 dB of gain and +30 dBm of saturated power at 45 percent PAE from a +5 V supply. Power down capability is available to preserve current consumption when the amplifier is not in use. The HMC327MS8G is ideal for usage in wireless local loop applications.
Hittite Microwave Corp., Chelmsford, MA (978) 250-3343.
Circle No. 234
The model SE2520L linear 2.4 GHz power amplifier is fully compliant to the Bluetooth™ 1.1 and IEEE 802.11b specifications. The amplifier optimizes performance with superior power-added efficiency and high output power. Designed to leverage a SiGe BiCMOS technology, the device offers 50 percent lower current consumption when compared to alternative solutions. The combination enables effective multi-mode power amplifiers for the first time in a range of portable and stationary 2.4 GHz applications.
SiGe Semiconductor Inc., Ottawa, Canada (613) 820-9244.
Circle No. 235
In-line Waveguide LNAs
The models SLK-22-3I and SLKa-22-4I low noise amplifiers are capable of covering full waveguide bandwidth of 18 to 26 GHz and 26.5 to 40.0 GHz, respectively. The in-line construction makes it easier to integrate these LNAs into systems where space is tight. Both models have 22 dB (typ) of gain and 3 dB noise figure for K-band and 4 dB noise figure for Ka-band.
Spacek Labs, Santa Barbara, CA (805) 564-4404.
Circle No. 236
The model IBM3602022Q020 AMPS/TDMA single band, two-stage power amplifier uses the company's SiGe BiCMOS technology to yield maximum efficiency in wireless handset applications. The 900 MHz amplifier's on-chip biasing technology helps ensure reliable performance in both operating modes. The amplifier also has a power down function to extend battery life. On-chip SWR protection allows the power amplifier to pass industry-standard ruggedness tests at full RF drive (+4 dBm input) with a load SWR of 10 at Vcc=5 V DC. The amplifier is available in a 20 lead, 4 mm low profile QFN package.
IBM Microelectronics Division, Hopewell Junction, NY (800) 426-4968.
Circle No. 255
The model DPL-LNA-2327-10-20 duplexer-LNA assembly is designed for MMDS applications and integrates a high power cavity transmitter filter, receiver filter and low noise amplifier into a single compact module for performance improvement, space saving and cost reduction. The module offers greater than 20 dB gain, with a noise figure of less than 3 dB for the receive channel and insertion loss of less than 1.5 dB for the transmit channel. Isolation between channels is greater than 60 dB while input and output return loss is less than 16 dB with SMA connectors. The unit operates from 12 V DC (100 mA). Price: $300.
GHz Technologies Inc., St-Laurent, Quebec, Canada (514) 335-6090.
Circle No. 253
Tri-band, Low Noise Amplifier
The model RF2417 tri-band, low noise amplifier (LNA) is designed for EGSM/DCS/PCS multi-band handset applications. It is a highly integrated, low power, low cost tri-band LNA and all three input and output ports include on-chip matching to minimize the external component count. In the 900 MHz EGSM band, the 2.7 V LNA offers a 1.6 dB noise figure and 17 dB gain. In the 1800 MHz DCS and 1900 MHz PCS bands, the device provides 1.9 dB noise figure and 17 dB and 19 dB of gain, respectively. The RF2417 offers a 23 dB gain reduction mode and three mode control pins to control gain and band selection. The LNA is assembled in a 16-pin leadless plastic package. Size: 3 x 3 mm.
RF Micro Devices Inc., Greensboro, NC (336) 664-1233.
Circle No. 240
This series of patch antennas is designed for use on small satellites and space shuttle applications. These interchangeable units are 82 mm square and 10.6 mm thick and have SMA RF ports. The model 0053-800 (2.106 GHz) and model 0054-800 (2.287 GHz) LHCP S-band models provide uplink and downlink capability. One RHCP L-band antenna (model 0055-800) operates at the GPS L1 frequency. SWR is less than 1.3 and axial ratio is less than 3 dB. All antennas are fabricated with space-qualified materials.
Seavey Engineering Associates Inc., Pembroke, MA (781) 829-4740.
Circle No. 256
The model AM 150 MX-CU GaAs MESFET has a total gate width of 15 mm and is offered in a specially designed ceramic package with straight leads and flange in a drop-in mounting style. The flange at the bottom of the package serves simultaneously as DC ground, RF ground and thermal path. It is well suited for wireless communications applications including WLAN, MMDS/MDS, PCS basestation, repeaters and Hyperlan.
AMCOM Communications, Clarksburg, MD (301) 353-8400.
Circle No. 237
Zero Bias Schottky Detector
The model 203S zero bias Schottky detector operates over the entire frequency band of 10 MHz to 40 GHz. Frequency response is ±0.5 dB to 20 GHz, ±0.8 dB to 26.5 GHz and ±1.5 dB to 40 GHz. SWR over these same frequency bands is 1.35, 1.50 and 2.00, respectively. Standard input connector is 2.4 mm male or K male. Low level sensitivity is 0.5 mV/mW. Detectors are available with narrower operating frequency bands with improved performance. Delivery: stock to three weeks.
Krytar, Sunnyvale, CA (408) 734-5999.
Circle No. 239
GPS Receiver IC
The model VS7001 integrated circuit for GPS applications is a fully integrated, pure CMOS receiver and provides the industry with a clear path to a single chip GPS system. With this, the receiver provides GPS designers with low power consumption, small die size, low external component count and a high level of design integration. The VS7001 is designed in pure, deep sub-micron CMOS and the total power consumption of the RF is only 27 mW, which allows the receiver to be placed in battery-operated devices.
Valence Semiconductor Inc., Irvine, CA (949) 655-4100.
Circle No. 241
The model AD6645 14-bit analog-to-digital converter (ADC) operates at 105 million sam- ples per second (MSPS). The new ADC enables multi-carrier software radio architectures in wireless basestations to achieve higher levels of signal quality as well as to keep pace with future air interface standards. Two grades of the AD6645 are available, features 105 or 80 MSPS sampling rates. The two-tone spurious-free dynamic range is 100 dB and the signal-to-noise ratio is 74/70 dB with 70/200 MHz inputs, respectively. The fast conversion rate also allows for more cost-effective designs.
Analog Devices, Wilmington, MA (800) 262-5643.
Circle No. 238
White Epoxy Molding Materials
REFLECTON™ white epoxy molding materials are formulated to withstand high solder temperatures while effectively retaining key optical, electrical and mechanical properties. Applications may include encapsulation for optocouplers, relays and other electronic and optoelectronic components. REFLECTON reflects the "good" light and keeps out the "tramp" light to make for a thinner design in products. By optimally balancing the features of high reflectivity with excellent opacity, REFLECTON allows design engineers to eliminate the additional epoxy layer.
Rogers Corp., Rogers, CT (800) 243-7158.
Circle No. 257
The model ABOF5S3E oven-controlled crystal oscillator (OCXO) meets specifications of high performance Stratum 3E applications. It features an HCMOS output and frequency calibration of 2 ppm at time of shipment and is an excellent choice for basestation, timing module and test equipment applications. Features of the CO8 package OCXO include precision third OT SC cut crystal, 10 ppb overall frequency stability, 0° to 70°C, aging of 30 ppb/year, single 5 V operation and TDEV < 5 ns at 300 seconds.
Connor-Winfield Corp., Aurora, IL (630) 851-4722.
Circle No. 258
The model IL3R ultra-small 32.768 MHz X-cut crystal is mounted in an SMD package and offers a frequency tolerance of ±20 parts per million at 25°C. Operating temperature is -40° to +85°C. Ideal applications include any product that keeps time such as a computer, watch, cell phone or pager. Size: 6.9 x 4.0 x 1.3 mm. Price: 50¢ each (100 K). Delivery: six to eight weeks (ARO).
ILSI America, Reno, NV (775) 851-8880.
Circle No. 244
200 kHz to 6 GHz Noise Module
The model NBM-6000 surface-mountable noise module offers a frequency range of 200 kHz to 6 GHz, and produces a minimum of +30 dB ENR of noise and has a flatness specification of ±2 dB. The model has a wide bandwidth, features voltage regulation and TTL control, making it ideal for use in a broad and nearly limitless range of applications. Typical applications for these modules include spread spectrum signal simulation, built-in test for communications receivers, digital video tester, component tester and more.
Micronetics Wireless Inc., Hudson, NH (603) 883-2900 ext. 314.
Circle No. 245
This calibrated dual crystal oscillator (CDXO) features stability of ±0.1 ppm over an industrial temperature range of -40° to +85°C. The oscillators are available with frequencies from 8 to 50 MHz. The CDXO has excellent phase noise performance under vibration, with a G-sensitivity of less than 0.5 ppb/G. This part has no frequency perturbations, excellent vibration and shock performance under dynamic conditions. The device can be surface-mounted and has reflow compatibility. The CDXO also has very low power consumption and requires less than 3.0 mA and the supply voltage ranges from 2.7 to 5.0 V. Size: 5.6 x 18.3 x 11.8 mm.
Rakon Limited, Auckland, New Zealand +64 9 573 5554.
Circle No. 246
Microwave Frequency Synthesizer
The model MFS-18.00/20.00 microwave frequency synthesizer consumes only +15 V DC at 350 mA and +5.25 V DC at 650 mA, making it ideal for applications requiring higher frequency, wider operating temperatures and smaller power consumption. The device employs a single module design implemented with CMOS, ASICs, advanced MMICs and a dedicated microprocessor. Ruggedized and field-tested for operations over a temperature range of +15° to +70°C, the synthesizer exceeds the requirements of IESS 308, Eutelsat and MIL-STD188-146. Its phase noise of -92 dBc at 10 kHz and -97 dBc at 100 kHz, make this high frequency MFS model suitable for applications in SATCOM converters, instrumentation and military applications. Size: 7.70" x 5.50" x 0.73".
Elcom Technologies Inc., Rockleigh, NJ (201) 767-8030 ext. 230.
Circle No. 259
The model PCA1550A miniature phase-locked loop (PLL) integrates the phase detector, loop filter and VCO and is primed to enhance any MMDS and fixed broadband wireless application. Utilizing advanced semiconductor chip scale packaging technology along with "0201" size components, this device realizes frequencies of 1500 to 1600 MHz with a 1000 kHz step size. With a loop bandwidth of roughly 1.25 kHz, this compact PLL offers close-in phase noise performance of -78 dBc/Hz and -103 dBc/Hz at 10 kHz offset or, equivalently, a RMS phase error of less than 1.0° integrated over 100 Hz to 100 kHz. With a maximum startup lock time of 3 ms and adjacent channel switching speed of 2 ms, the PCA1550A delivers 1.5 ±2.5 dBm into a 50 W load. The model operates over a temperature range of -40° to 85°C. Price: $39.
Z-Communications Inc., San Diego, CA (858) 621-2700.
Circle No. 247
Low Latency Zeus Transceiver
This low latency Zeus transceiver is fast and reliable with a time of 5.8 ms per hop period with features such as forward error correction, full duplex handshaking and addressability, making it ideal for point-to-point, point-to-multipoint and broadcast systems. This transceiver should be used wherever the need for reliable free operation is needed or desired. Operating at speeds up to 19,200 kbps it is well-suited for SCADA systems or control of non-real time needs such as pumps or motors in oil, gas, water and waste water plants.
RF Neulink, San Diego, CA (800) 233-1728.
Circle No. 248
Manual Probe Station
The model Jr-2736 manual probe station offers a larger wafer chuck, up to 8.5", and stage movement of 4" by 4", along with 7" of slide out for load and unload of test devices. This affords a cost-effective way to add capacity to RF microwave development groups needing design verification testing of high density, high performance wafers and subassemblies. Size: 14" x 20" x 6". Weight: 43 lb.
J microTechnology, Portland, OR (503) 614-9509.
Circle No. 250
Radar Test System
The model ME7220A radar test system features excellent accuracy and repeatability characteristics at 76 to 77 GHz. The unit is the first radar test system to combine target simulation and signal analysis capability in one instrument. The ME7220A represents a significant improvement over a rack-and-stack configuration because it offers better accuracy and repeatability, occupies less space and is easy to operate. Designed for use in a confined and controlled environment, the system provides a simulated radar target response with an adjustable radar cross section and one of two set target ranges. The signal response can be Doppler-shifted to simulate the speed of a moving target.
Anritsu UK Ltd., Bedfordshire, UK 01582 433200.
Circle No. 249
Vector Signal Generator
The second generation model CS2010 vector signal generator is updated to meet the needs of developers and manufacturers of cutting edge wireless systems. Performance advances include a new graphical user interface that maximizes ease-of-use in both production and research and development applications. Signals can now be selected and played with a single key stroke. For fast, automated recall and play in production test applications, signal files are cached and can be externally triggered. Enhanced signal creation capability has been added to the resident vector signal simulator software, which now offers a broad range of signal creation capabilities. A new high power option delivers +14 dBm RMS (up to +27 dBm PEP) across the full frequency range.
Celerity Systems, Cupertino, CA (888) 274-5604.
Circle No. 243