N/A Potential NDI requirement for an estimated quantity of 500 EA AN/GRC- 17X(V)4 Radios and ancillary equipment for several foreign military sales (FMS) countries for ground to ground and ground to air communications. No drawings are available. Radios must possess the following characteristics: Features: Embedded anti-jam (AJ) capability (HAVE QUICK I & II) Collocation capability Minimal cross modulation and intermodulation Active noise blanking Specifications: Frequency 225 to 399.975 MHz Channel spacing 25 kHZ, 7000 channels Reference frequency stability +/- 0.01 PPM Modes of operation AM voice, AM AJ voice, AM secure voice (with or without AJ), FM voice, FM AJ voice FM TADIL A (Link 11) data FSK TADIL C (Link 4) data Duty Cycle Continuous Standard 19-inch rack mountable Control Local and remote up to 5000 ft Receiver Characteristics: Sensitivity AM (NB) 3 uV for 10dB SINAD FM (NB) 1.5 uV for 12dB SINAD FM data 3 uV for 20dB quieting Selectivity Narrowband +/- 12.0 kHz Wideband +/- 37.5 kHz AGC NMT 3 dB variation in audio for 6 uV to 1 V RF input levels RF Cross Modulation Output SINAD NLT 14 dB for undesired signal of -15 dBm at 0.4 MHz, or +14 dBm at 4 MHz RF Modulation Desired signal of NMT -90 dBm to produce 14 dB SINAD with two off-channel signals with tones at 4 MHz, and 8 MHz, at level of -35 dBm, modulated at 400 Hz and 1700 Hz Transmitter Characteristics: RF Modulation AM -45 dBc FM -- -40 dBc Broadband noise (AM and FM) -125 dBm/HZ 10 to 20 MHz from carrier -130 dBm/Hz 20 MHz and greater from carrier Audio distortion Am and FM voice 10 percent FM TADIL A Intermodulation products NLT 40 dB below either of two tones, 10 kHz deviation per tone Guard Receiver Characteristics: Sensitivity 1.5 uV for 10 dB signal-plus-noise to noise Selectivity 38 kHz, 6 dB bandwidth Audio output 100 MW minimum; 300 t0 3000 Hz frequency response. Less than 10 % distortion. Frequency of operation 243.000MHz normal Fixed tunable 238 to 248 MHz. The AN/GRC-171X(V)4 high performance UHF receiver-transmitter is designed for reliable communications in normal or frequency hopping models (HQ1 and HQ 11) at collocated VHF/UHF transmitter-receiver sites. The equipment is completely solid-state, providing AM and FM communications on any one of 7,000 channels in the 225 to 399.975 MHz band with 20 watts AM or 50 watts FM carrier output. Plug -in modular construction and built-in test minimize mean-time-to-repair to no more than 20 minutes. The solid-state power amplifer is ruggedized for operation into high antenna vswr's under severe environmental conditions. Receiver-transmitter and remote control MTBF's are in excess of 6,000 and 43,000 hours, respectively. Troublesome interference problems at collocated sites are significantly reduced by an internal electronic RF filter. Radios must be capable of being installed in close proximity with minimal cross modulation and intermoduation. If you have a similar radio that you believe may meet these requirements, please forward a technical data package for evaluation to SM-ALC PKL-2, 5039 Dudley Blvd., McClellan AFB, CA 95652-1027. All responses must be received by the close of business (1600 hours) on 30 JAN 1998. The Government does not intend to pay for any information provided in response to this request.

Loren Data Corp. http://www.ld.com (SYN# 0505 19980123\SP-0013.MSC)