Dual frequency, monopole design.

The antenna supplied with the ELT P/N E-04.8 is a monopole, dual frequency antenna design. It has a recommended operating speed of up to 260 knots. We have a high speed blade antenna avalible, part number S65-1231-1 which is rated to Mach 1.0. Other antennas may be used provided they meet the minimum VSWR requirements as noted in the specifications section of this manual, (Section 15) and meet COSPAS/SARSAT approval for use with the model E-04 ELT. The coaxial cable supplied is RG-58, and is 5 feet long. A longer or shorter cable may be fabricated using RG-58 or equivalent cable, and Amp 227079-5 connectors. The insertion loss of the cable assembly at 406 MHz should not exceed 2 dB. At 121.5 MHz the insertion loss should not exceed 3 dB. The cable should be a minimum of 2 feet in length.