AP Instruments. 5105. Apacer Technology Inc. Data Transmission Network Corp. 8780. Dave Smith Instruments. 8395. Davicom Semiconductor, Inc. PS-7070. Replacement power supply for all GA/CP/AC and. AP-2870, AP-3700, AP-4700, AP-4800, AP-8700,. AP-8703, AP-8783, AP-8780 preamp models. PS-8000. Other Winegard Do -It- Yourself antennas and kits as low as $14.95. results apply also to the Thorens manual player, audiomatic player, and tran-.Very low noise figure; Integrated Low VHF+High VHF and UHF gain manual regulators Compare to Channel Master™ 7777, 7777HD, 7777v3, Winegard™ AP-8780,