Most duplexers are passive, mechanical devices. You did say the cavities had
been visually inspected and cleaned so we can assume the "cans" themselves are
fine. In my opinion the single component on a duplexer that's most likely to
fail would be the cable harness and its associated connectors
Rich, it sounds like an antenna, feedline, or tower/site issue. The easiest
way to find out would be a dummy load connected in place of your antenna.
Operate into the repeater locally with an ht and listen for any noise. What
you're describing is a fairly common problem with repeaters that sh
] RE: follow up on lightening strike last spring
response
Sorry if I've been late in posting. First, the antenna and hard line is ok.
We've tested that part out and its working. We think ( I ) that we got zapped
through a unused phone line which is mounted behind the repeater r
could be anywhere. I hate tower rats!
Jim
WA2RJP
- Original Message -
From: Richard
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, January 17, 2010 13:47
Subject: [Repeater-Builder] RE: follow up on lightening strike last spring
response
Sorry if I've been la
Sorry if I've been late in posting. First, the antenna and hard line is ok.
We've tested that part out and its working. We think ( I ) that we got zapped
through a unused phone line which is mounted behind the repeater rack.
Yes, we have tested the can's using both a IRL (?sp) and a General Dynam
At 1/16/2010 15:12, you wrote:
>I know its been a long time since I first posed the question on what might
>be causing the noise we were experiencing after being hit by lightening.
>After many trips to the Technical shop for testing, we replaced the
>repeater ( was a vertex 5000, now a Icom ur20
Do you get the same crackling noise with the duplexer attached to a
dummy load? a ground mounted antenna with different feedline?
73
Glenn
WB4UIV
At 06:12 PM 1/16/2010, you wrote:
>I know its been a long time since I first posed the question on what
>might be causing the noise we were experienc
Since your chief complaint is noise, you need to define the noise. Noise
in repeaters can be from MANY other sources besides duplexers. Sure your
cans *might* be at fault, but if you're not having desense issues, I
would not suspect them right off.
Is there anything loose on the tower? What kin
I bought a set of cans that took a lightning hit years ago on my 2 meter
repeater. They are older Phelps Dodge cans. The finger stock was OK,
but the tuning rod had arched. I retuned the low pass cans to high pass
and vice versa. They have worked fine ever since, but I do run them at
low po
Are these pass-reject cans with capacitors that might have been damaged?
Matthew Kaufman
Rich, you didn't mention the antenna, cable and jumpers. What did you do
there?
JIM
On Sat, Jan 16, 2010 at 6:12 PM, Richard wrote:
>
>
> I know its been a long time since I first posed the question on what might
> be causing the noise we were experiencing after being hit by lightening.
> After
I know its been a long time since I first posed the question on what might be
causing the noise we were experiencing after being hit by lightening. After
many trips to the Technical shop for testing, we replaced the repeater ( was a
vertex 5000, now a Icom ur2000) and are in process of checking
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