I wasn't talking about edge mount, either. When I say surface-mount, I = mean the top or bottom surface. And I wouldn't hesitate to make a = 90-degree turn at the geometries and frequencies we're concerned with. = The advantage I see to edge-launch connectors might be if there were = intensive documentation on making the quietest launch, since they've = been used quite a bit. Barring that, I would go with the surface-mount. = At the 1.5GHz your original e-mail mentioned, the difference in signal = integrity should be a moot point. And, don't forget to void the ground = plane under the center conductor's pad (although that's probably = unnecessary at 1.5GHz). Jeff Loyer -----Original Message----- From: Martin Euredjian [mailto:martin@xxxxxxxxxxxxxx] Sent: Thursday, November 14, 2002 10:46 PM To: Si-List Subject: [SI-LIST] Re: Surface mount SMB From: Rajiv Kumar Gupta > I have worked successfully with SMA; Its always better to use surface mount > as far as possible ... > Beside this always prefer Straight PCB mountable type of connector = instead of > rectanglur type PCB mountable connectors. When I referred to "surface mount" I wasn't necessarily talking about edge-launch (which, I guess, can be considered SMT) connectors. I'm concerned about middle-of-the-board straight SMB's, you know, normal to = the PCB surface. That's a 90degree turn right there, and, more than likely, = with vias to boot. I'm beginning to lean towards making changes in order to make = edge-launch SMB's work with this design. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D Martin Euredjian eCinema Systems, Inc. voice: 661-305-9320 fax: 661-775-4876 martin@xxxxxxxxxxxxxx www.ecinemasys.com =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: =20 //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages=20 Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu =20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu