Cruisers Forum

Join CruisersForum Today

Thread Tools Search this Thread Rate Thread Display Modes
Old 14-06-2018, 04:17   #1
Registered User

Join Date: Nov 2017
Location: Denmark
Boat: Grace 30
Posts: 20
Troubleshooting VHF, receive, but not transmitting

Hey Guys!
As the title says, I have an VHF (Shipmate RS 8000) that not will transmit but receive loud and clear. What can be the reason for this. I doubt it's the VHF. How likely is the chance that the cable is at fault. The VHF cable is in three pieces connected together. I recently bought a VHF cable from ebay because the cable from the mast to cable in the boat wasn't long enough (link in the bottom). So i bought that one to connect the two other cables. Is it possible that the cable from ebay doesn't support transmitting? Is there vhf cables that doesn't support transmitting either but just receiving?
Thank you in advance!
modernviking is offline   Reply With Quote
Old 14-06-2018, 12:37   #2
Registered User
ka4wja's Avatar

Join Date: May 2007
Location: Florida
Boat: Catalina 470
Posts: 2,100
Re: Troubleshooting VHF, receive, but not transmitting

Well, it could be the cable....but, without knowing a LOT more info, it's impossible to know....(usually, in cases like this, it is the radio....not the cable....but since we don't know where / to whom you attempted to transmit, nor even if the radio actually went into "transmit" mode?? there is no way to be certain of anything...except...)

Except that the Shipmate RS8000 is an old, non-DSC VHF radio....and because of its age, I'm more apt to suspect the radio, and/or microphone, and/or microphone cord, than the actual antenna cable...
But, I assume the antenna and antenna (coaxial) cables are also, they (and their connectors) are also suspect...

Bottom line:
You really need to spend the money on a modern VHF-DSC-FM Marine Radio....
And, spend the money of new cable/connectors....

I'm sure the cable from ebay is fine....although not really my choice, it should still work okay...
(Just my advice....but don't purchase these things thru ebay unless necessary.)

If you wish more specific answers, then please provide more specific information....these are only the first steps / basic questions....there are more!!

How do you know it isn't transmitting??
Does it actually go into transmit mode??
Do you see any additional current draw when it does attempt transmit??
What do you hear, when you're receiving?? Where are these stations? Shore stations? Ships? Other small boats?
Where and to whom did you attempt to transmit to? How far away are they??
Has this radio ever worked well for you?? When??
How old is this particular radio?
How does the microphone cord look?
How old is your antenna?
What antenna do you have? Brand and model?
What type of antenna cable do you have?? (RG-58 ??)
How long is it?
You have 3 pieces now?? one up the mast and one from mast base to radio, and now this new piece??
What condition is the cable?
What condition are all the connectors?
Have you tested the antenna and cables with another radio?
Have you tested the radio with another antenna? (you can just stick an 18" long piece of wire into the center of the radio's antenna connector, and try that)

Gosh, there are more questions and tests that you can do...
But, considering the age of that radio (and I assume the antenna and cables), it would easier and probably just as cheap, to just replace it!

Hope this helps.

fair winds.

John, KA4WJA
s/v Annie Laurie, WDB6927
MMSI# 366933110
ka4wja is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
NAIS400 says transmitting but can't be seen torrmundi Marine Electronics 25 17-05-2018 15:10
SSB radio receiving but not transmitting jr_spyder Marine Electronics 14 13-10-2016 12:45
M802 SSB not transmitting nelson.peter Marine Electronics 15 26-02-2015 19:42
AIS - Can I Recieve Permanently but Choose to Switch On / Off Transmitting ? impi OpenCPN 35 17-11-2010 04:38
SSB Not Transmitting nelson.peter Marine Electronics 19 26-05-2009 07:51

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 11:11.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.