SOURCES SOUGHT
58 -- Sources Sought Antenna Tuning Unit
- Notice Date
- 5/28/2003
- Notice Type
- Sources Sought
- Contracting Office
- DHS - Direct Reports, United States Coast Guard (USCG), Commanding Officer (C2EC), USCG Command and Control Engineering Center 4000 Coast Guard Boulevard, Portsmouth, VA, 23703-2199
- ZIP Code
- 23703-2199
- Solicitation Number
- Reference-Number-DTCG44-03-SSANTENNATUNINGUNIT
- Response Due
- 6/30/2003
- Archive Date
- 7/15/2003
- Point of Contact
- Carrie Houck, Contracting Officer, Phone 757-686-4215, Fax 757-686-4018, - Carrie Houck, Contracting Officer, Phone 757-686-4215, Fax 757-686-4018,
- E-Mail Address
-
CHouck@C2Cen.uscg.mil, CHouck@C2Cen.uscg.mil
- Description
- SOURCES SOUGHT **THIS IS NOT AN OFFER OR SOLICITATION** The Command and Control Engineering Center (C2CEN) is interested in locating potential sources capable of providing an all-weather Differential Global Positioning System (DGPS) antenna tuning unit. DGPS beacons operate in the Medium Frequency (MF) band, from 283 kHz to 325 kHz and broadcast a Minimum Shift Key (MKS) (100 bps or 200 pbs) signal at 1000 watts. Each beacon is assigned an integer frequency (in kHz) and uses one radiator to broadcast the signal. The signal is series fed via tower heights from 90-ft towers to 300 ft towers and various sloping-T towers. Current design uses a large, high-Q variable inductor to cancel antenna reactance and an impedance transformer to match antenna resistance to approximately 50 Ohms. The current system performs well under constant conditions, but changes in weather have been linked to changes in ground system resistance and ultimately antenna resistance ? a system design flaw requiring correction. A High Frequency (HF) style tuning design places the existing inductor in parallel with the antenna and a capacitor in series with the transmitter and antenna. The design has been proven with one variable capacitor and one variable inductor, requiring a network analyzer and hand tuning for optimum performance. Current system needs automatic tuning motors as well as automatic tuning circuit, capable of detecting and correcting antenna mismatch to ensure Vertical Standing Wave Ratio (VSWR) does not exceed 1.7:1 and remains below 1.2:1 for normal operation. Antenna tuning unit shall be designed to withstand heavy weather and associated perils of outside, unmanned exposure to extreme climates and conditions. Sources capable of providing equipment that meets the above specs must provide sufficiently detailed documentation/descriptive literature that clearly represents that these specs will be met. This information is to be e-mailed to chouck@c2cen.uscg.mil or faxed to (757) 686-4018 on or before 30 June 2003. Please ensure that information submitted includes company name, point of contact, telephone number, fax number and email address. THE GOVERNMENT DOES NOT INTEND TO AWARD A CONTRACT ON THE BASIS OF THIS REQUEST FOR INFORMATION OR OTHERWISE PAY FOR INFORMATION SOLICITED. THIS SOURCES SOUGHT IS FOR MARKET RESEARCH PURPOSES ONLY.
- Place of Performance
- Address: US Coast Guard, C2CEN, 4000 Coast Guard Blvd, Portsmouth, VA
- Zip Code: 23703
- Country: USA
- Zip Code: 23703
- Record
- SN00333117-W 20030530/030528213029 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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