Do I need to worry about blowing my RSP1B front end?

[boltonguy]

I have my rsp1b connected to a 150' long wire antenna that slopes from my 3rd floor home office window across my lawn down to a tree.
I also have a 5' long 2m/70cm jpole hanging in the window of the same home office.
Do I need to worry about impacting the SDR electronics if I transmit with 25W or 65W using my 2m mobile radio?

It seems like the 2m XMIT antenna is very close to the SDR RX antenna - can I damage the SDR electronics?

 

[rabbit108]

I have my rsp1b connected to a 150' long wire antenna that slopes from my 3rd floor home office window across my lawn down to a tree.
I also have a 5' long 2m/70cm jpole hanging in the window of the same home office.
Do I need to worry about impacting the SDR electronics if I transmit with 25W or 65W using my 2m mobile radio?

It seems like the 2m XMIT antenna is very close to the SDR RX antenna - can I damage the SDR electronics?

Hello, boltonguy; welcome to the forum.

YES!

 

[G7RUX]

Yes, you do need to be concerned. However, coaxial RF power limiters are available which should protect the receiver from all but the most extreme exposures of this type, and they aren’t expensive. Just google for “RF power limiters” and you’d should find suitable units.

 

[rabbit108]

RSP1B DATA SHEET

 

[boltonguy]

I'm not really finding anything useful searching for RF Power Limiters

 

[prcguy]

Both of these are a steal, they originally cost around $1200 and most other sellers want a couple hundred $$ used.

HP Agilent 5086-7261 DC to 25 GHz, 10 W, SMA (F-F) Coaxial Limiter. Tested! | eBay

Coaxial Limiter. HP Agilent 5086-7261. DC to 2.5 GHz, 10 Watt, SMA (F-F).

www.ebay.com

HP / Agilent 5086-7284 DC to 1.8 GHz, 10 W, SMA (M-F), Coaxial Limiter. Tested! | eBay

Coaxial Limiter. HP / Agilent 5086-7284. SMA (M-F ). DC to 1.8 GHz, 10 Watt.

www.ebay.com

 

[vagrant]

I use a handful or so of those HP / Agilent filters to protect my scanners/receivers at home and in vehicles. This includes ADS-B receivers as well as a television that uses an outdoor antenna.