Today's Message Index:
----------------------
1. 10:45 AM - Continuous open squelch Icom RFI Gemini (Ken)
2. 05:28 PM - Re: Speaking of battery issues... (Robert L. Nuckolls, III)
3. 09:58 PM - Re: Shield wiring ()
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Continuous open squelch Icom RFI Gemini |
Just some comments for the archives since I could not find any specific
info on this problem. Perhaps it will help someone in the future.
When my Icom A200 VHF was replaced with a new A210, I was plagued much
of the time with an open squelch even with max squelch selected. The
interference was coming in through the antenna. It turns out that the
cast metal radio frame is ever so slightly wider than the older radio.
Widening the panel opening a tiny bit to let the radio slide about
0.020" further into the tray fixed the problem. I would also note that I
found it easy to remove and install the A210 without disconnecting that
front panel ribbon cable that has caused problems for some owners.
Confounding my trouble shooting was that my handheld VHF has had the
same problem with an uncontrollable open squelch when placed on the
glareshield. Battery powered but with the rubber ducky antenna. I don't
often use it like that and had not noticed exactly when it started to
misbehave other than it was a couple of years ago. It seems that RFI
from a Gemini glass ADI was contributing to that problem. A 0.001 uF
capacitor across the power connections in its Dsub connector quieted
that enough to make the handheld stop breaking squelch at least when it
is above the metal glareshield. Even easier would be one of these filters.
http://www.l-com.com/d-sub-capacitive-filter-emc-adapter-db9-male-female
Ken
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speaking of battery issues... |
At 03:03 AM 8/27/2014, you wrote:
>Hi Bob-
>
>Were you ever able to glean anything from the
>Battery Tender Jr I sent you some time back?
>
>Tnx-
Not yet . . . but testing is under way . . . I had some help
from my grand-daughter this summer who did a bang-up job
getting rid of some trash and getting stuff 'organized' in
my office/electronics shop. Unfortunately, I had three
Battery Tender Jr. in one box and don't know which one
is yours. Got out the data acquisition system and set
up to 'cycle' all three devices. It will be an interesting
comparison. It will take a few days but the experiment
is moving forward . . . we'll see if we can identify
your charger by its behaviors in a blind study.
Bob . . .
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Shield wiring |
...and know that the unit does not come with a jumper to use! I robbed one
from an old computer hard drive for an ACK unit on another Berkut I'm
working on.
-James
Berkut/Race 13
-----Original Message-----
From: Werner Schneider
Sent: Friday, September 05, 2014 3:02 AM
Subject: Re: AeroElectric-List: Shield wiring
--> Do not forget as well to have the correct baud rate selected via the
jumper inside!
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|