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SLR 8000 100 W VHF RX Issue

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Sabaaco

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Feb 1, 2021
Messages
7
Hi all,

I've Repeater SLR8000 VHF, when I make call and press PTT there is activity on the front LED and I can hear the sound at the receiver side but with noise. I've tested the repeater power It give's me 90W.I think there is some issue with the RX part but I need your help to diagnose and detect that issue.
Note: There is no alarm on the front panel LED and Bell LED is GREEN.
 

Sabaaco

Member
Joined
Feb 1, 2021
Messages
7
I'm using it without duplexer separate TX RX antenna.
Freq. is RX:139.750000, TX:144.750000
Antenna : OMNI

Chk the video plz.

IMG_5487.MOV
 

Tech21

Member
Joined
Oct 16, 2018
Messages
472
If you have service monitor, check your receive sensitivity. Optimal Rx Sensitivity is -120 db. What you also need to do is have the watt meter in line and check your forward and reflected. Your wireline Rx sensitivity also needs to be checked. If you don't have a service monitor, good luck. Follow the steps in the manual, also.
 

MTS2000des

5B2_BEE00 Czar
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Jul 12, 2008
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Location
Cobb County, GA Stadium Crime Zone
Classic sign of desense. This is why quality duplexers are the way to go. With that much RX/TX set, a 4 cavity BPBR will work wonders. Separate antennas require a minimum of 60 feet of vertical sep, ASSuming one is running quality feedline. This is where duplexers make better sense
 

jeepsandradios

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Jul 29, 2012
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East of the Mississippi
I don't even see antenna cables in the video so what's really up. If your testing on a bench the TX should be on a dummy load. Your never gonna do VHF 100 watts without a duplexer unless you have alot of separation as was stated by others. Buy a duplexer and real antenna and feedline if you want this to work. I also assume this is not in the US looking at the frequencies in use ? I know 144 starts ham band in US.
 

Tech21

Member
Joined
Oct 16, 2018
Messages
472
Classic sign of desense. This is why quality duplexers are the way to go. With that much RX/TX set, a 4 cavity BPBR will work wonders. Separate antennas require a minimum of 60 feet of vertical sep, ASSuming one is running quality feedline. This is where duplexers make better sense
LMR-400 to the top of a 400 foot tower, probably.
 
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