It would be one of these depending on what type connector you need. This is directly from the Antenex website. Hope this helps...
Portable Antennas
TRUNKING AND SMR APPLICATIONS
Model Frequency Center Freq Gain Overall Length Whip Style Connector Type
DEXC806BN 806 - 866 MHz 836 MHz Unity 4 1/4 Wave BN $21.07
DEXC821BN 821 - 902 MHz 861.5 MHz Unity 4 1/4 Wave BN $21.07
DEXC902BN 902 - 970 MHz 936 MHz Unity 4 1/4 Wave BN $21.07
DEXC806BNX 806 - 866 MHz 836 MHz Unity 4 1/4 Wave BNX $21.07
DEXC902BNX 902 - 970 MHz 936 MHz Unity 4 1/4 Wave BNX $21.07
DEXC806MD 806 - 866 MHz 836 MHz Unity 4 1/4 Wave MD $16.91
DEXC821MD 821 - 902 MHz 861.5 MHz Unity 4 1/4 Wave MD $16.91
DEXC806MX 806 - 866 MHz 836 MHz Unity 4 1/4 Wave MX $16.91
DEXC902MX 902 - 970 MHz 936 MHz Unity 4 1/4 Wave MX $16.91
DEXC806SF 806 - 866 MHz 836 MHz Unity 4 1/4 Wave SF $21.07
DEXC902SF 902 - 970 MHz 936 MHz Unity 4 1/4 Wave SF $21.07
DEXC806SFJ 806 - 866 MHz 836 MHz Unity 4 1/4 Wave SFJ $21.07
DEXC821SFJ 821 - 902 MHz 861.5 MHz Unity 4 1/4 Wave SFJ $21.07
DEXC806SFU 806 - 866 MHz 836 MHz Unity 4 1/4 Wave SFU $21.07
DEXC821SFU 821 - 902 MHz 861.5 MHz Unity 4 1/4 Wave SFU $21.07
DEXC902SFU 902 - 970 MHz 936 MHz Unity 4 1/4 Wave SFU $21.07
DEXC806SM 806 - 866 MHz 836 MHz Unity 4 1/4 Wave SM $21.07
DEXC821SM 821 - 902 MHz 861.5 MHz Unity 4 1/4 Wave SM $21.07
DEXC902SM 902 - 970 MHz 936 MHz Unity 4 1/4 Wave SM $21.07
DEXC2400SM 2400 - 2500 MHz 2450 MHz Unity 6" 1/4 Wave SM $20.66
DEXC806TN 806 - 866 MHz 836 MHz Unity 4 1/4 Wave TN $21.07
DEXC902TN 902 - 970 MHz 936 MHz Unity 4 1/4 Wave TN $21.07
DEXC806TNX 806 - 866 MHz 836 MHz Unity 4 1/4 Wave TNX $21.07
Threaded Connector Guide
MX: 1/4-32 x 7/32. For Motorola® MX, P100, P110, P200, GP300, MT1000, HT10, HT50, HT600, Radius®, Saber®; Spirit®; Expo®; Kenwood® TK230, TK250, TK340, TK350; Maxon® SP120, SP2550, SL70; Midland®; Wilson® MH200.
MD: (Molded antennas only) M7 x 1.0. For GE®, MPA, MPD, MTL, TPX.
KR: 5/16-32x 3/8. For King Radio®; Ritron® Jobcom™.
HT: 5/16-32 x 1/2 For Motorola® HT200, HT210, MH, MT, MT500, MX600; older Ritron®; older niden®. Insulated base very common thread.
Coaxial Connector Guide
BN: BNC Male. For all equipment requiring BNC, including GE® MPI, PLS, PCS; Kenwood® TK-100, TK-210, TK-300; Motorola® HT440, HT90;old Maxon®; E.F. Johnson ® 577, 578
BNX: Covered BNC Male. Same as above. (molded antennas only).
For Bearcat® Trunktracker™, and the Maxon® CP series.
MR: 12-28 Female. For GE,MPR,MPX, MPS.
SF: (Molded antennas only). Special SMA Connector Female.
For Motorola® 800 MHz, MX360, STX, MTX800, HT1000, MT1000,
MT2000, MTX8000, MTX9000, VISAR; Kenwood TK430, SEA700
SFJ: (Molded antennas only). For E.F. Johnson® 8790;
Kenwood® TK480, TK481. (No skirt).
SFU: (Molded antennas only). King Radio® 800 MHz, Uniden® 800 MHz,
newer VHF/UHF, SPU416K, SPU48K.
SM: (Molded antennas only). SMA Connector Male.
For GE® Marc V™ 800 MHz, STS®, Technophone®; Standard ® HX585.
TN: TNC Male. For all equipment requiring TNC,
Speaker/mic. Icom® ICU18, Standard® HX-340.
TNX: Covered TNC Male (Molded antennas only).