Sometimes the antennas provided with the transmitters and receivers are not enough. Using these replacements and upgrade may help you attain higher signal quality 1.2 GHZ Antenna Upgrades and replacements 2.4 GHZ Antenna Upgrades and Replacements All Security and CCTV products come with a minimum 1 year warranty, and in some cases, the manufacturer may extend it further. All prices shown are DELIVERED UPS std Ground, and there are no additional shipping charges unless other shipping arrangements are required. Government, and institutional Purchase orders accepted with prior approval. Please fax your purchase order directly to 231-346-5920, or call 231-932-9550 for details and toll free faxing. Thank you again for visiting cu1.com, your surveillance and security equipment experts. Please stop in again! Gladly Accepted.