Transmit-receive switches
Transmit-receive switches
The adjacent thread "MFJ-1708B-T/R Switch Experiences" reminded me of a question I wanted to ask, but I thought it might be clearest to post a new thread rather than tag on to that one.
Currently I have two SDRplay RSPduo units running continuously, each attached to its own magnetic loop antenna. I'd like to set up a T/R switch arrangement so that both RSPduo's are disconnected from their antennas when I transmit via my Icom IC-7300 (which has its own separate antenna).
One way to do this would be to obtain two MFJ-170B T/R switches, and connect each to one of the RSPduo's. Hopefully the IC-7300's PTT send-control signal out won't have any problem triggering both switches.
Before I proceed with this, does anyone have any suggestions for other ways to accomplish this? Are there any commercial T/R switches out there that can handle two antennas that connect to two separate receivers at the same time?
Currently I have two SDRplay RSPduo units running continuously, each attached to its own magnetic loop antenna. I'd like to set up a T/R switch arrangement so that both RSPduo's are disconnected from their antennas when I transmit via my Icom IC-7300 (which has its own separate antenna).
One way to do this would be to obtain two MFJ-170B T/R switches, and connect each to one of the RSPduo's. Hopefully the IC-7300's PTT send-control signal out won't have any problem triggering both switches.
Before I proceed with this, does anyone have any suggestions for other ways to accomplish this? Are there any commercial T/R switches out there that can handle two antennas that connect to two separate receivers at the same time?
Reason: No reason
Re: Transmit-receive switches
If it's just a 7300 and using it's own antenna, why not connect a NoElec upconverter between them?
It will give extra protection.
The switch, I ordered the B version only helps if you want to use the same RX/TX antenna.
If your TX antenna is a few meters away and the output is just 100W, nothing will happen.
I use 1KW near mine, however the TX antenna isn't in direct line with the RX antenna, they are 90 degrees angled.
But if I connect the RSP1A with NoElec to a miniwhip, 8 meters away, the waterfall is overloaded, else nothing happens.
Don't forget the level of the field drops rapidly after a few meters.
Mine work fine when making 1KW, no problem at all. As said, I added an NoElec as it has extra protection against ESD and other high levels .
It will give extra protection.
The switch, I ordered the B version only helps if you want to use the same RX/TX antenna.
If your TX antenna is a few meters away and the output is just 100W, nothing will happen.
I use 1KW near mine, however the TX antenna isn't in direct line with the RX antenna, they are 90 degrees angled.
But if I connect the RSP1A with NoElec to a miniwhip, 8 meters away, the waterfall is overloaded, else nothing happens.
Don't forget the level of the field drops rapidly after a few meters.
Mine work fine when making 1KW, no problem at all. As said, I added an NoElec as it has extra protection against ESD and other high levels .
Reason: No reason