switch box

15 links

Two Wire Beverage - Two Wire Beverage by Jeff Parke, describes a two-wire Beverage antenna design for improved reception with switchable direction (forward/backward) and lower noise level. It includes details on building the antenna, matching transformers, and a control box for selecting direction and connecting to the receiver.
[ Hits: 11717 | Votes: 10 | Rating: 5.8 ]
Beverage switching box - Sharing beverage antennas with this switch boxes is possible. This article describes a 6-position remote antenna switch for Beverage antennas on 3 bands (160m, 80m, 40m). It allows selecting one of 6 antennas for each band without affecting other receivers. The system uses a control box with a rotary switch and a separate splitting box with bandpass filters for each band.
[ Hits: 5507 | Votes: 3 | Rating: 4.33 ]
Beverage switch-box - A home made Beverage system for portable use. The goal was to switch between 4 single Beverage antennas without interfering on the other receiving stations.
[ Hits: 115 | Votes: 1 | Rating: 8 ]

Short Antenna for 40-30-20 Meters Band - This page describes an entirely simple, One-Knob matchbox that will match this antenna efficiently on 40, 30 and 20m, using a simple circuit that can be switched between series-resonant and parallel-resonant with just one banana jumper
[ Hits: 237 | Votes: 1 | Rating: 7 ]

Triband Receiving Loop for 160/80/40m - A receiving only loop antenna for low bands, cover 160 to 40 meters with a remote antenna switch box well described and illustrated in this article
[ Hits: 890 | Votes: 1 | Rating: 10 ]

K8UR Phased Array Switchbox - A Phased Array Switchbox by ComTek founder K8UR, switch your 4-Square in 8 directions and control it remotely over the internet
[ Hits: 318 | Votes: 2 | Rating: 5.5 ]

Sherwood Engineering Inc. - Cooling kits, drake filters, speach processors, audio switch boxes, synchronous AM detectors,
[ Hits: 1162 | Votes: 4 | Rating: 5.5 ]

Ameritron ALS 600S review - PDF file of the Ameritron ALS 600 with switching power supply review published on QST
[ Hits: 480 | Votes: 1 | Rating: 10 ]

Remote Coax Switch - 6x2 coaxial remote antenna switch, completed unit showing weatherproof relay box and station control unit.
[ Hits: 2758 | Votes: 1 | Rating: 1 ]
Outdoor HF Antenna Switch - The antenna swtich was designed to assist with antenna comparisons mande with a IP56 rated box
[ Hits: 774 | Votes: 0 | Rating: 0 ]
Five Antennas Switch Box - A project of a 5 Antennas Relay Switch Box, all Switches & Relays have both contacts wired in parallel to improve reliability of operation, to prevent static build up, when an antenna is not in use the feeder coax is grounded.
[ Hits: 1248 | Votes: 1 | Rating: 10 ]
Beverage Remote Switch ^new - The author describes building a remote switch box to control the direction of two reversible Beverage antennas. The switch uses a buried cable and relays to select the desired antenna direction from the shack. The design is simple and uses common components.
[ Hits: 37 | Votes: 0 | Rating: 0 ]

CW Key-to-Rig Switch Box - This is an easy afternoon project to switch multiple cw keys between several rigs. If you've ever wanted to change keys on one rig or use one key on several rigs, this gadget makes it easy. Plug keys into the box inputs, and plug each of the box outputs into a rig. No need to fumble around behind the rigs to move a key from one to another or to swap paddles for a bug.
[ Hits: 46 | Votes: 0 | Rating: 0 ]

An Inexpensive Microphone Selector Switch - Take a commercially available switch box intended for switching data lines such as printer cables between two computers, and change out the connectors so that it can be used to switch between two microphones to one transceiver.
[ Hits: 254 | Votes: 1 | Rating: 7 ]