Thanks for all the replies.
Tom, I put that preamp at the antenna to hear a specific station on 20
meters to the NW. On 20, I cannot always hear the background noise in the
reverse direction. The Beverage is too long for that band (580'), not to
mention it's made from electric fence wire.
My main
Where can I find a schematic for a good high pass filter that rolls off at
1700 kHz?
I can't even have back to back diodes here on Beverages without amplifiers,
because the accumulation of hundreds and hundreds of BCB stations sum to
more than two volts peak.
With a 10dB gain amp, I can light
Hi Mike!
I use filters made by Jack Smith at
http://www.cliftonlaboratories.com/current_products.htm
Great filters ( and expertly pre-tuned ) at a reasonable price - especially
so if you purchase just the bare filter board ( w/o enclosure ).
73
Lloyd - N9LB
-Original Message-
From: T
Oops.
Forgot to include the link. Here is the link.
http://sites.google.com/site/lwmwbandrejectfilter/
73,
Don (wd8dsb)
On Sun, Oct 11, 2015 at 9:03 PM, Don Kirk wrote:
> Hi Mike,
>
>
> Here is a link to a simple website I created that describes a high pass
> filter I built earlier this year
Hi Mike,
Here is a link to a simple website I created that describes a high pass
filter I built earlier this year that rejects both the LW & MW band. It
was originally described in a Feb 1978 QST article. I use it in front of an
SDR receiver, and really happy with its performance.
Don (wd8dsb)
Where can I find a schematic for a good high pass filter that rolls off at
1700 kHz?
Yesterday, I installed a preamp --that I made over 20 years ago-- right at
one of my 2-wire Beverage antennas. Even in the reverse direction (NW)
where losses are the greatest, it easily overloads from out-of-ban
I hope it's not, too. :-)
SDR fascinates me, and I intend to experiment with the technology on 160
meters starting with a Softrock Xtall Lite 9.0 and the matching switchable
BPF.
73, Mike
www.w0btu.com
On Sun, Oct 11, 2015 at 10:23 AM, Stephen Hicks, N5AC
wrote:
>
> I hope it's not an issue fo
On Sun,10/11/2015 6:09 AM, JC wrote:
Another issue with DDC radios available nowadays is the lack of shield, they
looks like a computer board and that's it, performs like a computer board. No
good RF practice to protect the noise floor or common mode noise. Really not
ready for field use.
AL
Rick,
I hope it's not an issue for me to post here directly. I am posting here
because I believe that amateur radio has a huge educational component and
ultimately incorrect information services no one. I got started when I was
12 and really knew very little about the hobby. My journey, like mo
The opinion expressed in the Flexradio editorial about noise blankers
being
completely harmless, is not an opinion, it is even false.
It really isn't an accurate or factual technical article. It is a sales
brochure meant to enforce the love each of us have for a particular system,
in this ca
Hi guys
I would like to add my 2 cents on this matter. If you not good, or a very
good, RF engineer it is hard to understand what DDU/DUC radio do for you.
The most important thing, DDC/DUC radios are not the same just because of
the DDC. Number of bits, jitter on the clock works like phase nois
The opinion expressed in the Flexradio editorial about noise blankers being
completely harmless, is not an opinion, it is even false.
What Flexradio says: ""With a noise blanker, we remove thousands of samples
with no negative effects to the signal being monitored and a momentary
overload from the
I'm not an RF engineer so any "direction" or "stay inside these boundaries,
Dood" assistance is appreciated! However, as a Systems Engineer with a
background in statistics, I missed the "what?" factor when he mentioned Central
Limit TheoremI shoulda put on my "Huh?" hat so I'm almost
embarr
I have no experience with Flex Radio equipment,
(it might be great stuff for all I know),
so I will confine my comments to the theory
discussed in the "ADC overload myths debunked"
paper. A lot of what I read didn't make a
lot of sense to me, or seemed irrelevant.
Same here. Didn't make sens
Steve Hicks, N5AC and the VP of Engineering at FlexRadio
has posted an excellent explanation and bust of the
ADC overload myth on the FlexRadio community. You don’t
need to be registered on the community to read this excellent write up:
https://community.flexradio.com/flexradio/topics/adc
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