At
PJ2T, we’ve standardized on the DX Engineering HD-5000HD
receiver protection devices.
Here
is a link to an article done by Jim W8WTS, comparing the old
DEO RG-2000U device sold by Universal Radio and the DXE
RG-5000 device (slightly older design than the current
HD-5000HD. Both are still available.)
http://www.k8nd.com/Radio/CW_Skimmer/W8WTS_Comparison_RG-2000_RG-5000.pd
73, Jeff K8ND
Another
option would be a receiver protector like the AS-RXFEP from
Array Solutions. It uses a gas tube across the input to
ground, a high voltage blocking capacitor on the input, and
a 1:1 transformer. The company claims it will limit signals
to 0.3 volts PEP and protect against nearby lightning.
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at <http://beta.reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.
On 9/15/2021 1:04 PM, Igor Sokolov wrote:
Thanks to all who helped us. Indeed only
USB chip was damaged. It was replaced and QS1R is working
now. We are looking for a new location for RU9CZD skimmer.
It will probably be some rural place with less man made
noise. In order to protect the receiver from static in the
future we plan to put a cathode follower between the antenna
and QS1R. Does anybody have experience using this type of
protection? Do you think it is a good idea?
73, Igor UA9CDC
13.08.2021 17:35, Prasad VU2PTT пишет:
Igor,
I had lost the USB chip in the QS1R here from a very
nearby lightning strike some time back. Replacing it
worked - nothing else was affected on the board. Lost many
other things too but the QS1R had only this part damaged.
Good luck!
73,
Prasad VU2PTT.
On Fri, 13 Aug 2021 at 6:58 AM, Igor Sokolov <ua9cdc@gmail.com
<mailto:ua9cdc@gmail.com>>
wrote:
Thank you guys. Visual inspection did no reveal any
damage. The radio
does not respond when connected to computer USB. That
is why we
thought
may be only USB was affected. IF the USB chip
CY7C6813A does not
require
firmware we will try to substitute it first.
13.08.2021 0:01, Pete Smith N4ZR пишет:
>
> Amen. I thought mine had a USB transceiver
problem, but when I
looked
> more closely, the ADC chip - still a $105 part -
showed severe
burning
> and bubbling on its top surface. Since there is
very little
between
> the antenna input and the ADC, it's not hard to
imagine
lightning damage.
>
> 73, Pete N4ZR
> Check out the new Reverse Beacon Network
> web server at<http://beta.reversebeacon.net
<http://beta.reversebeacon.net>>.
> For spots, please use your favorite
> "retail" DX cluster.
> On 8/12/2021 2:50 PM, Bob Wilson, N6TV wrote:
>> That is the USB transceiver chip, so I
imagine it does not need
any
>> firmware installed.
>>
>> But if there was lightning nearby while the
antenna was connected,
>> many more chips could be damaged.
>>
>> 73,
>> Bob, N6TV
>>
>>
>> On Thu, Aug 12, 2021 at 11:20 AM Igor Sokolov
<ua9cdc@gmail.com
<mailto:ua9cdc@gmail.com>
>> <mailto:ua9cdc@gmail.com <mailto:ua9cdc@gmail.com>>>
wrote:
>>
>> RU9CZD skimmer is off line as our trusted
QS1R that have been
>> serving us
>> for many years went out of order during
recent thunderstorm. We
>> would
>> like to try and fix it. The suspect is
CY7C6813A. This chip is
>> available
>> locally but the question is, does it need
some sort of firmware
>> installed prior to soldering it in. Is
this firmware
available from
>> somewhere? Help would be highly
appreciated.
>>
>>
>> 73, Igor UA9CDC
>>
>>
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