Hi guys .I am just wanted to confirm a question on coax shielding .
With 2-10 watts transmitting through rg213u could rf be escaping that could
cause desensitization to other radios .The repeater I have setup uses 9
meters of heliax from the main diplexer to ant and rg213u from the link
radio
At UHF, possibly, at VHF unlikely... you did not specify :-)
How close are the frequencies??? Lots of details left out for us to help.
If the freq's are within a few hundred kiloherts at vhf, antenna
separation is probably the issue...
More details please??
Doug
KD8B
kerincom wrote:
Hi
To: mail=repeater-buil...@yahoogroups.com
Subject: [Repeater-Builder] Coax shielding
Hi guys .I am just wanted to confirm a question on coax shielding .
With 2-10 watts transmitting through rg213u could rf be escaping that could
cause desensitization to other radios .The repeater I have
or 0749922574
www.kerinvalecomaudio.com.au
---Original Message---
From: Doug Bade
Date: 6/28/2010 12:59:24 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Coax shielding
At UHF, possibly, at VHF unlikely... you did not specify :-)
How close are the frequencies
.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of kerincom
Sent: Sunday, June 27, 2010 7:51 AM
To: mail=repeater-buil...@yahoogroups.com
Subject: [Repeater-Builder] Coax shielding
Hi guys .I am
Subject: RE: [Repeater-Builder] Coax shielding
Ian,
RG-213 coax can definitely contribute to desense, as can cheap connectors
and adapters. I suggest making up new jumpers using double-shielded coax
such as RG-400 or RG-214, and fit these jumpers with high-quality, crimp-on
connectors of the correct
Ian;
It would seem that at uhf ~30mhz away cable leakage in the shed
would seem to be less likely than antenna to antenna interference. In
general it is the white noise generated by a transmitter on other
frequencies that is most likely to cause desense to a co located rx.
Assuming you
---
From: Doug Bade
Date: 6/28/2010 1:44:27 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Coax shielding
Ian;
It would seem that at uhf ~30mhz away cable leakage in the shed
would seem to be less likely than antenna to antenna interference. In
general it is the white
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Coax shielding
Ian;
It would seem that at uhf ~30mhz away cable leakage in the shed
would seem to be less likely than antenna to antenna interference. In
general it is the white noise generated by a transmitter on other
-Builder] Coax shielding
Ian;
It would seem that at uhf ~30mhz away cable leakage in the shed
would seem to be less likely than antenna to antenna interference. In
general it is the white noise generated by a transmitter on other
frequencies that is most likely to cause desense to a co
---
From: Doug Bade
Date: 6/28/2010 2:08:45 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Coax shielding
In theory most xtal radios are quieter than synthesized ones, but a
filter would seem to be the better thing to do as it really stops the
problem...even
mailto:Repeater-Builder@yahoogroups.com
/*Subject:*/ Re: [Repeater-Builder] Coax shielding
Ian;
It would seem that at uhf ~30mhz away cable leakage in the shed
would seem to be less likely than antenna to antenna interference. In
general it is the white noise generated by a transmitter on other
mailto:wb6...@verizon.net
Date: 6/28/2010 1:24:37 AM
To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Coax shielding
Ian,
RG-213 coax can definitely contribute to desense, as can cheap connectors and
adapters. I suggest making up new
13 matches
Mail list logo
