The same interfaces may be applied to most digital modes and other computer programs for interface with computer control of radios. Unlike some other types of ham radio software though, most external ALE controllers, including PCALE, only send commands to the radio via the serial port, and do not receive commands back from the radio via the serial port. The good old standard RS serial port is used by the computer ALE controller to send control signals to the radio. On older desktop computers designed in the s through the s, the RS serial port used a DB25 male 25 pin connector.
Several different scan modes may be provided: Open Scan scans all 80 channels to find an active conversation. Some radios allow skipping selected channels when scanning.
Group Scan scans a small number of selected channels. For example, a caravanner travelling around the country may choose to group scan Channel 40 Road Channel18 Caravan Channel and 5 Emergency Channel so they will hear any conversations relating to their travels.
Priority Scan allows selection of a "priority" channel whilst scanning a handful of selected channels. This could be useful in a convoy of cars where vehicles can set their own convoy channel as a priority channel whilst scanning the designated road channel for traffic updates, if a member from their convoy speaks, the radio will always switch back to the priority channel even if someone is speaking on another channel.
Selcall[ edit ] Selective calling Selcall allows a radio to call another radio using a sequence of tones, usually presented to the user as a series of 5 numbers. UHF CB radios can be set to be completely silent until they receive a series of tones matching a pre-programmed sequence.
Radios which have this feature usually indicate that a call has been received by emitting a number of beeps and by opening the squelch. CTCSS can be used to silence a radio until another radio with the same tone transmits.
This allows monitoring of a channel for transmissions from radios set with the same tone without hearing other conversations that use different or even no tone.
Repeaters[ edit ] Repeaters extend the range of transmission by receiving and automatically rebroadcasting a transmission using an antenna located in a high location, normally the top of a mountain, tall building or radio tower. Repeaters are on channels 1—8 and 41—48 and the duplex button should be pressed to access the repeater.
For example, during the widening of the M1 Pacific Motorway between Sydney and Newcastle, contractors installed "UHF 29" signs at the entry point to each worksite. In New Zealand channels 5 and 35 are not emergency channels, they are available for general use in duplex repeater mode.
Scan all channels for activity before requesting assistance. Channel 9 is the designated emergency channels in Malaysia. Channel 22 and 23 are only to be used for telemetry and telecommand, packet data and voice transmission are not allowed.
Channel 61, 62 and 63 are reserved for future allocation and transmission on these channels is not allowed.
Channels used by consensus[ edit ] The following channels are not legislated as a part of the class licence however are used for the following purposes by consensus. Channel 10 is typically used by 4WD clubs when in a convoy and in national parks.
This channel is used to avoid interfering with road safety communications on channel 29 or If you are not in a convoy it is recommended that only 29 or 40 are used, depending on the road in question. Channel 18 is the campers and caravan convoy channel typically used by travellers.
It is used due to one transport company who travelled this road who always used this channel. Other drivers switched from 40 to 29 to talk to them and it became a custom.
This custom prevails even though the original transport company no longer exists. Users should avoid using these channels to avoid interfering with repeaters. If a repeater is to be used, switch to 1—8 or 41—48 and press the duplex button.
Current UHF CB band plan 80 Channels [ edit ] General chat channels are used in simplex mode, repeater channels must be used in duplex mode. If you are not using a repeater it is recommended to choose a "general chat" channel.Compare the best free open source Windows Ham Radio Software at SourceForge.
Free, secure and fast Windows Ham Radio Software downloads from the largest Open Source applications and software directory User Interface User Interface. Graphical (96).NET/Mono (6) Carbon (1) Cocoa (5) Gnome (5) QRadioPredict is an experimental software for.
Ham Radio Digital Modes software list. A large list of ham radio digital mode software and sources to get them with descriptions of each. West Mountain Radio has the interface you will need. They are offering a good discount to attheheels.com viewers. V4 can be implemented on most computers using standard PC sound cards with radio.
UHF RFID: Taking Manufacturing Visibility and Control to the Next Level Ultra High Frequency (UHF) RFID Radio Spectrum MHz MHz (north America) MHz (Europe) PC-based logistic application(s) ¢ Light barriers at the outgoing goods read zone are wired.
KV5R: Icom ICMkIIG Mods and Tips Menu Home Articles Index Web Development Web Dev Index Windows Windows Index Linux HSend will key the radio on HF/6, while VSend will key it on V/UHF bands. "Off" is useful if you will key the radio from a computer interface for all bands.
"On" is useful of you will key the radio with a computer on HF. Resources listed under SoundCard Interfacing category belongs to Technical Reference main collection, and get reviewed and rated by amateur radio operators.
Sound Card Radio Interfacing. Most Popular. Sound card interfacing PC sound card interfacing for RTTY SSTV PSK31, collection of interface connections to choose from when having a desire.
Software Information PC Interfaces for the scanning radio hobbyist & professional radio control applications. Tuning control of the Yaesu FTR multiband VHF/UHF transceiver. M and MR NMEA computer interface.
Micro-G2b Rotor control.