Coax switch?

[Shadetree Mechanic]

Found another neat gizmo. It automatically mutes the SDR line when you key up.
https://www.mfjenterprises.com/Product.php?productid=MFJ-1708SDR

 

[338_MtRushmore]

Found another neat gizmo. It automatically mutes the SDR line when you key up.
https://www.mfjenterprises.com/Product.php?productid=MFJ-1708SDR

View attachment 27767

The reviews are really bad on the 1708-sdr. I run the 1708b-sdr with my sdrplay, and I an very happy with it. The dual receive capability is extremely handy.

 

[338_MtRushmore]

Yes the unused terminals shunt to grnd but some RF can still bridge over, especially
if you are running an amplifier.
It happened to a friend of mine.

I'm pretty sure the specs are on their website or on the packaging they come in.

I don't think it is advisable to switch a transceiver in behind an amp. If your amp can't be passed through, use 2 switches to bypass the amp

 

[fourstringburn]

Found another neat gizmo. It automatically mutes the SDR line when you key up.
https://www.mfjenterprises.com/Product.php?productid=MFJ-1708SDR

View attachment 27767

Already tried it and it didn't work well at all.

For an easy SDR to radio interface, the ELAD box works flawless with my Icom IC-7000.

The RF connectors are on the rear panel, the front has audio ins/outs.

These maybe a bit hard to find but they're out there.

 

[jon666]

not that hard google it.im done giving free information. no disrespect to anyone. just tired of helping people without even a thank you.hope no one is offended.

 

[TheRealPorkchop]

not that hard google it.im done giving free information. no disrespect to anyone. just tired of helping people without even a thank you.hope no one is offended.

I am not offended. I’m the worlds worst for not thanking someone verbally but that doesn’t mean that I don’t appreciate someone or their help/advice. I hope I’ve not made you feel that but if I have, I do apologize.

 

[jon666]

no not you trpc

 

[338_MtRushmore]

not that hard google it.im done giving free information. no disrespect to anyone. just tired of helping people without even a thank you.hope no one is offended.

Had to do a little digging, but I understand now. I am curious as to what type of switch you used when you made them, but I'm not going to twist your arm.

 

[Slowmover]

Thanks for thread and all on offer. Just been thinking about one.

 

[338_MtRushmore]

Just stumbled across the MFJ rhino switch. Gold plated contacts and claiming 70 dB isolation on the 2 or 3 position, and 60 dB on the 4 position. Now that I look closer at the specs, the 2 position doesn't ground unused ports.