HF Transmit/Receive Switch For SDR. SDR transceivers are great, with colorful waterfall displays that accurately present everything there is to see across the band at a single glance. If you want to know where the activity is, who`s generating splatter, what`s happening in the DX window, how wide your audio is, or what frequencies are clear for calling CQ, it`s all right there! Unfortunately, it's information you won`t get from your conventional radio without wasting a lot of time tuning around.Fortunately, you don`t need to get rid of that perfectly good rig to go SDR, thanks to miniature wide-band SDR receivers like SDRplays RSP family -- now available at a station-accessory price. All it takes is a convenient way to pair one up with your transceiver. That`s where the MFJ-1708SDR comes in. Your transceiver and SDR unit share the same high-performance antenna system. This arrangement allows you to simultaneously watch and listen. Then, when you key up to transmit, the MFJ-1708SDR cuts off and grounds the SDR antenna line, providing your SDR with bullet-proof protection from damaging RF. It`s the perfect plug-and-play solution for upgrading your shack to wide-screen living color. MFJ-1708SDR uses the PTT signal from your rig to initiate the switching, but as a failsafe measure, built-in RF sense circuitry will provide a measure of safety if the PTT connection is lost. Software Defined Radios are becoming commonplace, and often have to work. In conjunction with radio transceivers. Some means of protecting the SDR. Input is required while the rig is transmitting. Not all radios have an RF out. (protected) jack, and those that do often require some sort of loopback. Connection to complete the receive audio path. Radios with IF outputs do not. Allow the full spectrum to be monitored. Some means of antenna sharing is often. Required which will isolate the SDR during transmit operations. 1708SDR Transmit/Receive Switch will solve this. The MFJ-1708SDR T/R switch uses a relay, which switches from transmit to. When no power is applied to the unit, it is in the transmit mode. Once power is applied the relay switches on and the unit is in receive mode. When the unit senses RF or the control line is grounded from a keyer or PTT. Switch, it switches the relay off and the unit is in transmit mode. The delay adjustment allows you to change how fast the relay switches back to. It is adjustable from 0 to 2 seconds. The MFJ-1708SDR T/R Switch requires 12 VDC or 110 VAC with MFJ-1312D. Power supply (not included but we have these in stock). Power2.1mm Coaxial power input jack with center pin positive and. Controls time delay for switching.
I don't sell used or refurbished equipment. The item "MFJ-1708SDR Antenna switch, HF, Transmit/Receive Switch For SDR, 200W SSB PEP" is in sale since Tuesday, December 19, 2017. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Other Ham Radio Equipment". The seller is "thehamshop" and is located in Summitville, Tennessee.
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