Re: [IRCA] Shortwave band interference

["James Niven" <jniven@xxxxxxxxxxxxx>]

Robert,

I want to thank you for your suggestion on these chokes from the below URL.
I purchased the RFI-Kit-1 and RFI-Kit-2 kits which have the large and small
chokes.
I am very impressed with these chokes; my noise issue is pretty much now
non-existent on shortwave frequencies. I listened tonight and added many new
loggings to the logbook.
I also used the large choke on my ELAD USB cable to the laptop and I was
amazed how it quieten the noise level down as well which I was getting from
the laptop power supply. If I wanted to run over night recordings, it was
only from the battery power.

Now, it's time to improve my antennas next since the noise issue is gone.

Thanks agin!!

-----Original Message-----
From: IRCA [mailto:irca-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Robert LaFore
Sent: Monday, August 14, 2017 6:55 PM
To: irca@xxxxxxxxxxxxxxxx
Subject: Re: [IRCA] Shortwave band interference

Yes, Common Mode chokes work wonders. You might be able to knock some of it
back with ferrite snap ons for the power supply and the Cable TV coax.


For the cokes, checkout http://myantennas.com/wp/product-category/cmc-2/




On 8/14/2017 7:47 PM, R. Colin Newell wrote:
> A) common mode chokes for the antenna -
> B) choke kit for the D.C. Supply for the cable modem.
>
> Colin Newell - CoffeeCrew.com - VA7WWV - Victoria - BC
>
>> On Aug 14, 2017, at 4:40 PM, James Niven <jniven@xxxxxxxxxxxxx> wrote:
>>
>> Hi all,
>>
>> Here in the shack my AM band is very clear of any interference and I have
no
>> issues picking out weak stations, but the shortwave bands are covered in
a
>> kind of hash interference and only strong signals are being heard.
>>
>> Over the weekend, I turned off all the circuit breakers in the house and
one
>> by one turned them on until I found the device(s) causing the
interference..
>> It turns out the spectrum cable modem is the issue along with the two
boxes
>> on top of the TV's for the cable connection. These devices are powered by
>> the external power pack.
>>
>>
>>
>> I am wondering if anyone has had any experience in tackling such noise or
>> will the MFJ-1026 unit be affective enough to reduce or remove the noise
I
>> am experiencing.
>>
>>
>>
>> Unfortunately, turning on the cable modem is out of the question as it's
the
>> Internet/TV and Phone services to the house, plus my wife uses the
internet
>> as well.
>>
>>
>>
>> Any suggestions are welcomed..
>>
>>
>>
>> Regards,
>>
>>
>>
>> James Niven
>>
>> Austin, Texas
>>
>>
>>
>>
>>
>> ---
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