Mfj 1708 sdr software

Mfj 1708 rf sensing tr switches can automate your nostalgia. Rf sensing for radios that do not have a keying output when transmitting. The mfj1708sdr lets you do that by connecting the sdr antenna while your transceiver is receiving, and then grounding your sdr antenna. We then put the mfj1708sdr to the test, proving just like the circuit diagram. Mfj 1708 rf sensing tr switches mfj1708 free shipping. I am using sdr console for the sdr software and have integrated the freeware omnirig which. Limitations of the mfj1708 user modifications unfortunately, as configured above there is one drawback for many users. Anyone using an mfj1708 to split their antenna for a. According to the manual i downloaded for the mfj1708sdr there is no provision to use a contact on the relay to mute the audio. I purchased the mfj1708 tr switch that many of you are familiar with to do this.

For example, you can use remote control software like ham radio deluxe or edit and backup your memory channels easily with ftbasicmmo. Mfj mfj1708bsdr switches coaxial automatic, mfj1708bsdr. The mfj1708sdr tr switch uses a relay, which switches from transmit to receive mode. There is a delay circuit adjustment which gives you delayed switching. Mfj 1708 sdr switch box interface cable 8 pin mini din yaesu. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from mfj enterprises, inc.

I can view the entirety of the 40m band, select a frequency and then key up my transceiver which causes the mfj1708 to pull the sdr out of the. Elecraft kx3 and kx2 win4k3suite for the elecraft k3 k3s. Ordering the ptrx7300 sdr tap point for the ic7300. Mfj rf sense transmitreceive switch switches your antenna from receiver to transmitter using a relay. Mfj1708sdr software defined radio transmit and receive switch. Click the button below to add the mfj 1708sdr, transmitreceive switch for sdr to your wish list. Be aware that the mfj switch is only rated to 200 watts pep. Do you still enjoy using the vintage tubetype transmitters and receivers of your youth. The mfj 1708b sdr features 3 so239 connectors, the mfj 1708b sdr s substitutes an sma female connector for the sdr connection. A few weeks ago we posted about the mfj1708sdr automatic relay switch and how it can be used to combine an rx only sdr with a transmit capable radio. Sdr is a quality make, such as the sdr play line up, rather than a cheap rtl sdr that will. But the mfj switch will also remove the transceiver from the transmit connection while in receive. If wired properly and used within its specifications, the mfj switch should protect your sdr input. It provides the means of sharing the same antenna yet isolating the sdr receiver on transmit.

I had purchased a mfj 1708b so i could transmit with my radio, and receive with. The splitter gives high isolation between the transceiver and sdr receive port to reduce crosstalk and interference between the two ports. A portal that hams think of as the first place to go for information, to exchange ideas, and be part of whats happening with ham radio on the internet. Mfj1708sdr antenna switch, hf, transmitreceive switch. The rtl sdr is an ultra cheap software defined radio based on dvbt tv tuners with rtl2832u chips. Affordable protection for your rsp mfj 1708 one of the issues commonly faced by hams is how to protect sensitive receivers in the vicinity of radio transmitters. Do you enjoy using vintage tube type transmitters and receivers of your youth. Product description the mfj1708sdr tr switch uses a relay, which switches from transmit to receive mode. Once power is applied the relay switches on and the unit is in receive mode. Station accessories mfj page 1 main trading company.

I connect the yaesu transmitter, sdr receiver and tuner to this switch. But we need antenna, with the mfj1708sdr you can share your favorite hf antenna with an sdr. The last piece of the puzzle was the purchase of the mfj 1708 rf switch. One popular solution for those who wish to build a pan adapter or just want to protect their rsp which is operated nearby a rig is the mfj1708. Rf sensed tr switches with a receive splitter designed to be used with a transceiver and a. An automatic antenna relay switch is used to automatically ground the sdrs antenna input whenever. For software pete uses hdsdr and omnirig which allows the pc to control the ic7300. The mfj1708sdr lets you do that by connecting the sdr antenna while your transceiver is receiving, and then grounding your sdr antenna while transmitting. With power applied, the mfj 1708 senses transmitted rf and switches the antenna from receive to transmit using a relay.

Icom ic7300 panadapter mfj1708sdr, sdrplay, hdsdr and. Discussion in software defined radio sdr started by kf5naj, dec. Has a stripline pcb reducing the swr up through 450 mhz and improved isolation for better receiver protection. Antenna coming into mfj 1708, splitting between my ft897d and an hf sdr.

Unlike many software defined radio software, all demodulation, modulation and filtering of the kx3 signals are handled by the kx3 itself. Mfj1708 for an antenna sharing solution one solution to share antennas is to add an mfj1708 tr switch. It was a real chore to switch your antenna from transmit to receive and back it still is. Sdr transceivers are great, with colorful waterfall displays that accurately present everything there is to see across the band at a single glance. Mfj1708sdr software defined radio transmit and receive switch specifications. The mfj1708sdr is intended to switch the antenna off the sdr or any receiver when you transmit and ground the antenna input to the external receiver sdr. Does anyone have any knowledge or experience with a setup such as this to offer an opinion about overloading the receiver input with subsequent damage to the sdrplay. Mfj1708sdr software defined radio transmit and receive.

You can share your current antenna with your 100 watt hf rig and an sdr for receive. Play like the big guns with little money santa barbara. One popular solution for those who wish to build a pan adapter or just want to protect their rsp which is operated nearby a rig is the mfj 1708. The question is rf isolation between the receiver and transmitter port on the mfj switch. It does not provide a means to mute the audio on the receiver. It also means that without the receive channel of the rig being available your. Describe your experience with the mfj 1708 rf sense transmitreceive switch and tell us why you give it the rating you did required. One of the issues commonly faced by hams is how to protect sensitive receivers in the vicinity of radio transmitters. This hybrid sdr approach leaves the digital signal processing to the engineers at elecraft, while providing a full featured spectrum scope like the p3 and full control of the radio. This unit will automatically sense rf from the transmitter and then remove the panadapter radio from the receive antenna connection. Click the button below to add the mfj 1708b sdr, rf sensing transmitreceive switch for sdr 200 watts, hf, vhf, uhf to your wish list.

For instance, we get a call from one of the leading sdr players, he says they have been modifying a current product. Anyone using an mfj 1708 to split their antenna for a second receiver panadapter. Mfj mfj 1708bsdrs sdr tr rf sense switch hfvhfuhf sma female. Mfj1708sdr transmitreceive switch for sdr receivers. Using the mfj1708sdr to have a wide band panadapter. Here is an interesting device, for use with your sdrplay or other sdr dongle for receive. Some means of protecting the sdr input is required while the rig is transmitting. The receive channel can now only be heard via the rsp and sdr software, which is delayed in real time due to the signal processing. Sdrplay tagged with amateur radio, mfj1708sdr, sdrplay march 29. When using a mfj 1708 sdr it appears to be making the switch from. The rtl sdr can be used as a wide band radio scanner.

Mfj1708sdr sdr tr antenna switch waters and stanton. Using the mfj 1708sdr to have a wide band panadapter. Mfj 1708b sdr description hide rf sensed tr switches with a receive splitter designed to be used with a transceiver and a separate receiver such as the popular sdr receivers. Demonstrating the mfj 1708sdr automatic relay switch with an sdrplay and icom ic7300. The sdr port has a protection circuit to help prevent damage from transmit rf. I got talked into purchasing the sdr duo to run concurrent with my ft dx 1200. In your description, you state that your flex controls the amp. The antenna socket to the receiver is then grounded which protects the receiver. Your transceiver and sdr unit share the same highperformance antenna system. Mfj 1708sdr instruction manual transmitreceive switch 2 introduction software defined radios are becoming commonplace, and often have to work in conjunction with radio transceivers. All information, images, and documents on this website are the sole property of mfj enterprises, inc.