Is RSP2 IF connection to R8500 safe (9VDC)?

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ghidley@ucsd.edu
Posts: 3
Joined: Sun Dec 09, 2018 12:58 am

Is RSP2 IF connection to R8500 safe (9VDC)?

Postby ghidley@ucsd.edu » Mon Dec 31, 2018 1:26 am

I was going to connect my RSP2 to the IF output on my Icom R8500, but noted that jack outputs a 10.7 MHz IF signal with 9VDC. Is direct cabling safe with that 9VDC on the center pin?

I could just connect to a Tee at the receive antenna port of the R8500 ... was hoping for wider bandwidth of IF connection.

thanks
greg
Last edited by ghidley@ucsd.edu on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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glovisol
Posts: 638
Joined: Thu May 10, 2018 6:42 pm
Location: Piedmont, Italy

Re: Is RSP2 IF connection to R8500 safe (9VDC)?

Postby glovisol » Wed Jan 02, 2019 7:29 am

Hi Greg,

You could take an Ohmeter and test resistance between centre pin and ground of your RSP2. If you get "open circuit" or a very high resistance reading (100 K or more) it means you have a capacitor insulated input on the RSP and you can safely connect to the R8500. If, on the contrary the RSP2 input is DC terminated, you could place a capacitor in series yourself by building a small adapter.

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