Discussion:
[UnidenBC780XLT] Loss of VHF Sensitivity
va3vfo@gmail.com [UnidenBC780XLT]
2016-03-26 16:12:06 UTC
Permalink
Hi..
Just notices my 780 XTL is not receiving well, certainly not on VHF . This post may be premature, as I have not started detailed troubleshooting, but I have the gut feeling (due to similar front end problems in other radios) that some near-by Lightning or RF has taken out the front end.


Air band/BC FM "seems" ok, although weaker signal strength than I would normally expect ( Its been a long time since I have used the 780) , UHF and higher seem ok...but that's in just flipping through....I have to do more detail testing.


Before I go on a tangent, is the VHF front end pre-amp, or any BPF known to be a common repair item on the 780? I will check usual RF connection to C.B. problems etc, but I doubt that is it...



I will report back, but any heads-up on sensitivity issues for the 780 would be appreciated.


Archive search didnt find any past posts



thx
Gregtheham
John Kintz asheville307@bellsouth.net [UnidenBC780XLT]
2016-03-26 16:57:05 UTC
Permalink
I'm not aware of any particular shortcomings of the '780. For what it's
worth, the two I own are pretty long in the tooth and both are still
working well. If it has been a 'long time' since last used, is it
possible that something in the shack (or nearby) is affecting the '780
front end. Move the '780 to another location (far away) to see if there
is any improvement.

John AC4JK
Post by ***@gmail.com [UnidenBC780XLT]
Hi..
Just notices my 780 XTL is not receiving well, certainly not on VHF .
This post may be premature, as I have not started detailed
troubleshooting, but I have the gut feeling (due to similar front end
problems in other radios) that some near-by Lightning or RF has taken
out the front end.
Air band/BC FM "seems" ok, although weaker signal strength than I
would normally expect ( Its been a long time since I have used the
780) , UHF and higher seem ok...but that's in just flipping
through....I have to do more detail testing.
Before I go on a tangent, is the VHF front end pre-amp, or any BPF
known to be a common repair item on the 780? I will check usual RF
connection to C.B. problems etc, but I doubt that is it...
I will report back, but any heads-up on sensitivity issues for the 780
would be appreciated.
Archive search didnt find any past posts
thx
Gregtheham
Loading...