It is not the loss, it's the isolation we are all after. Some typical RG58
cables have less than 80 dB, while the solid shield cables can exceed 120
dB. Even with the 80 dB stuff, that's 160 dB total (cable-to-cable) so it
should be fine, unless the transmitter has a problem.
I measured two
It is not the loss, it's the isolation we are all after. Some typical RG58
cables have less than 80 dB, while the solid shield cables can exceed 120
dB. Even with the 80 dB stuff, that's 160 dB total (cable-to-cable) so it
should be fine, unless the transmitter has a problem.
These short
Of john_ke5c
Sent: Friday, April 30, 2010 12:09 AM
To: dstar_digital@yahoogroups.com
Subject: [DSTAR_DIGITAL] Re: Dstar Repeater receive is bad . .
A few months ago, the same digital repeater was setup in Mt. Lukens in Los
Angeles and in the same setup where an analog repeater used to be. Right
Very simple test:
A very quick and easy test for desense.
2 people and a GOOD dummy load needed. (type NM connection that will attach
directly to the bulkhead fitting on the back of the repeater).
Have one person with dummy load in hand at the repeater with a talkie. The
second in the field
AM
To: dstar_digital@yahoogroups.com
Subject: [DSTAR_DIGITAL] Re: Dstar Repeater receive is bad . .
A few months ago, the same digital repeater was setup in Mt. Lukens in Los
Angeles and in the same setup where an analog repeater used to be. Right away
we noticed the difference in receive
Does it receive better in low power than it does in full power? If so, the
problem is desense. What is your antenna/duplexer situation?
Ernie
W6KAP
--- In dstar_digital@yahoogroups.com, Lot k6...@... wrote:
Hi Everyone,
Our club bought a Dstar Repeater (IDRP4000v IDRP2C).
For some
Hi Lot,
The issue with the Icom UHF repeater hardware is that the receiver has poor
selectivity (immunity to off frequency and out of band transmissions) and poor
sensitivity.
You need a lot of RF separation between the transmitter and receiver ports...
100dB or better is what you need. You
A few months ago, the same digital repeater was setup in Mt. Lukens in Los
Angeles and in the same setup where an analog repeater used to be. Right away
we noticed the difference in receive sensitivity. We made some test at a low
level location and that is where we realized that even in
