Antenna won’t connect

lisadafoe · May 8, 2018

I am still pretty new at this. I have a uniden 325p2 and I bought a new antenna for it that says bnc because I believe that’s what I’m supposed to get and it won’t connect. It doesn’t match up. The antenna I got is the diamond srh789

ofd8001 · May 8, 2018

I looked at the Diamond antenna site for this model https://www.diamondantenna.net/srh789.html and it says it is an SMA connector. So that's apparently the reason.

Hopefully you can return it if you specifically ordered the BNC antenna. They should not have sold you the SMA versios.

lisadafoe · May 8, 2018

Is there an adapter I can get?

SteveSimpkin · May 8, 2018

lisadafoe said:
Is there an adapter I can get?

The antenna appears to be as SMA Male so you would need an SMA Female to BNC Male adapter such as the following.
https://www.amazon.com/Maxmoral-Female-Coaxial-Adapter-Connector/

I think you would be better off getting an antenna with the right BNC connector.

ipfd320 · May 8, 2018

Hey Lisa --This is the Link You Need--This is the Adapter

https://www.amazon.com/Maxmoral-Fem...r=8-3&keywords=SMA+Female+to+BNC+Male+adapter

jonwienke · May 9, 2018

If the Diamond model number starts with s, it has a SMA connector and will not fit your scanner without an adapter.

ofd8001 · May 9, 2018

Sorry for being a little late in responding. The above is good information.

Another point - adding an adapter may negate any gain you get from a different antenna, assuming that's why you got one. There is a little attenuation each time you introduce a connection.

Ubbe · May 11, 2018

ofd8001 said:
There is a little attenuation each time you introduce a connection.

Yes, but emphase is on little. 10 connectors in series put on an analyzer didn't show any measurable attenuation I.E less than 0,1dB. The problem are if a connector gets corroded from wheather or if it is of a bad mechanical design that could make a bad connect when stressed sideways.

When I buy cheap chinese adaptors in a 10-pack I usually have to discard 2-3 of them when I test them listningen to a constant weak carrier on a scanner and wiggle the connector and there is noticable change in the signal strenght.

/Ubbe

ecps92 · May 11, 2018

Because the connections inside are not soldered.

Saw a T cut in half the other day and nothing soldered, they relied on connections sitting next to each other, another CCP [Cheap Chinese Product], wiggle and no connection.

Ubbe said:
Yes, but emphase is on little. 10 connectors in series put on an analyzer didn't show any measurable attenuation I.E less than 0,1dB. The problem are if a connector gets corroded from wheather or if it is of a bad mechanical design that could make a bad connect when stressed sideways.

When I buy cheap chinese adaptors in a 10-pack I usually have to discard 2-3 of them when I test them listningen to a constant weak carrier on a scanner and wiggle the connector and there is noticable change in the signal strenght.

/Ubbe

Antenna won’t connect

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