At 01:25 PM 11/3/2007, John Marranca, Jr wrote:
Does anyone know of a source of the MIL-SPEC right angle BNC adapters? I am using a hamfest special, and have a feeling that it's affecting my rx on the birds.
For kicks, cut it open. I did this once with a right angle "N" adapter that I bought at a swapmeet, and in which I observed poor performance. Inside I found the center conductor was a small spring! The idea, I believe, was that the spring would naturally form a gentle circular arc from the center pin of one connector to the center pin of the other, maintaining nice spacing from the sidewals. This would be fine at DC, or maybe HF, but at UHF this was worthless. The spring was electrically a coil, in other words an inductor, which was altogether the wrong thing. Laughable.
Frank:
That's what I have come to wonder! I read that some place before as well.
MIL-SPEC vs. "the spring". Hmm....which is better.....
Thanks for reminding me of something that I ALMOST forgot about.
Remember to change your SMOKE DETECTOR BATTERIES, my friends. It's Eastern STANDARD time tonight.
John KB2HSH
On 11/3/07, Franklin Antonio [email protected] wrote:
At 01:25 PM 11/3/2007, John Marranca, Jr wrote:
Does anyone know of a source of the MIL-SPEC right angle BNC adapters? I
am
using a hamfest special, and have a feeling that it's affecting my rx on
the
birds.
For kicks, cut it open. I did this once with a right angle "N" adapter that I bought at a swapmeet, and in which I observed poor performance. Inside I found the center conductor was a small spring! The idea, I believe, was that the spring would naturally form a gentle circular arc from the center pin of one connector to the center pin of the other, maintaining nice spacing from the sidewals. This would be fine at DC, or maybe HF, but at UHF this was worthless. The spring was electrically a coil, in other words an inductor, which was altogether the wrong thing. Laughable.
Thanks for telling me something I never KNEW about!
Roger WA1KAT
----- Original Message ----- From: "John Marranca, Jr" [email protected] To: "Franklin Antonio" [email protected] Cc: [email protected] Sent: Saturday, November 03, 2007 6:32 PM Subject: [amsat-bb] Re: Right Angle BNC adapters
Frank:
That's what I have come to wonder! I read that some place before as well.
MIL-SPEC vs. "the spring". Hmm....which is better.....
Thanks for reminding me of something that I ALMOST forgot about.
Remember to change your SMOKE DETECTOR BATTERIES, my friends. It's
Eastern
STANDARD time tonight.
John KB2HSH
On 11/3/07, Franklin Antonio [email protected] wrote:
At 01:25 PM 11/3/2007, John Marranca, Jr wrote:
Does anyone know of a source of the MIL-SPEC right angle BNC adapters?
I
am
using a hamfest special, and have a feeling that it's affecting my rx
on
the
birds.
For kicks, cut it open. I did this once with a right angle "N" adapter that I bought at a swapmeet, and in which I observed poor performance. Inside I found the center conductor was a small spring! The idea, I believe, was that the spring would naturally form a gentle circular arc from the center pin of one connector to the center pin of the other, maintaining nice spacing from the sidewals. This would be fine at DC, or maybe HF, but at UHF this was worthless. The spring was electrically a coil, in other words an inductor, which was altogether the wrong thing. Laughable.
-- _______________________________
John Marranca, Jr PBX Technician/Shop Steward CWA Local 1122 BN Systems, Inc Orchard Park, NY (716)972-2006 _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (3)
-
Franklin Antonio -
John Marranca, Jr -
Roger Kolakowski