SMA -> N-type connectors for USRP

Slightly OT, but since the USRP uses SMA connectors and most oscopes use
N-type connectors, I’m looking for some SMA->N-type connectors.

I’ve found:
http://www.pasternack.com/product-SMA-MALE-TO-N-MALE-PE9080-72143.html

I don’t know if $33 is expensive or not for this type of thing. Where
do you purchase your connectors and cables?

Thanks!
George

On 8/14/07, George N. [email protected] wrote:

I don’t know if $33 is expensive or not for this type of thing. Where
do you purchase your connectors and cables?

I think Universal Radio has some decent stuff, but they may not have
EVERYTHING you’re looking for.

http://www.universal-radio.com/catalog/parts.html

I also just saw they have a 40-piece kit which is expensive ($150),
but allows you to construct any adapter you may need.

http://www.universal-radio.com/catalog/parts/3613.html

Not bad if you don’t know what you need, but in your case I’d say $33
is much too expensive and you can probably find them for sub $5
generally.

Brian

Hi George

I usually get my electronic stuff from digikey.com, in one of my last
orders I go this adapter for about $11.50:
http://catalog.digikey.com/scripts/partsearch.dll?Detail?name=ACX1343-ND

Robert

George N. wrote:

Slightly OT, but since the USRP uses SMA connectors and most oscopes use
N-type connectors, I’m looking for some SMA->N-type connectors.

I’ve found:
http://www.pasternack.com/product-SMA-MALE-TO-N-MALE-PE9080-72143.html

I don’t know if $33 is expensive or not for this type of thing. Where
do you purchase your connectors and cables?

I usually get my “tweenies” at hamfests, where an N to SMA adapter might
go for $5 to $20, depending on the quality (cheap import vs. gold-plated
Amphenol or other name brand).

Pasternak is about as expensive as RF components get, but their quality
is very good. You might also try Digi-key; they carry at least some
adapters.

But are you sure you want an N connector? Most scopes use BNC
connectors, except possibly for microwave sampling heads that could use
Ns.

John

Thanks for all the responses from everyone.

Right, it has a BNC, that was my mistake.

I pretty much have no supplies other than a ton of SMA cables that were
purchased for the USRPs. So I’m building up my stash :slight_smile:

  • George

— George N. [email protected] wrote:

I don’t know if $33 is expensive or not for this type of thing.
Where do you purchase your connectors and cables?

Does your scope really have and N connector on it? Most use BNC.
Adapters are nice to have but you can have a custom cable made up
with the correct type of connector on each end or make them
yourself if you keep a supply of coax and connectors on hand.

The last batch of coax and connectors I bought was from these guys.
I think they can assemble the parts for you if you want. They have
“everything”.
http://thewireman.com/products.html scroll down to where it says
“Connectors & Accessories”.

Chris Albertson
Home: 310-376-1029 [email protected]
Office: 310-336-5189 [email protected]
KG6OMK


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Also, you almost certainly do not want to put an adaptor on the SMA
connector on the USRP; that will cause too much strain. Instead, use an
SMA to SMA cable and put the adaptor (BNC male to SMA female) on the
scope.