The front end of the 5K isn't an issue if you are using a receive
converter. The front end of the converter is what you have to be
concerned about, specifically, it would be best if the converter had
it's own low pass filter to prevent overload from local mediumwave stations.
The converter output is in the 3.5 to 4 MHz or the 4 to 4.5 MHz
bands...where the 5K has it's own filters.
73,
Ken Alexander
VE3HLS
On 2013-01-13 8:49 PM, Bob Kay wrote:
I too have considered their VLF converter, but after experiencing the
rather broad front end of the 5K in that part of the spectrum, I'm
cautiously not expecting too much. I contacted Heros and they admitted that
you might have issues if you live in areas near broadcast stations.
On Sunday, January 13, 2013, Robert Costa, KB6QXM wrote:
Nige,
Outstanding video on the Heros pre-selector. Look forward to your next
installment of having the pre-selector track the Flex.
Interested in testing other Heros products like their VLF/LF converter.
You have sold me on the desire to have the Heros pre-selector. Now I need
to see how well their LF converter works.
I like their product selection. A bit pricey, but it looks very well made
and well engineered. Wish their products had a US dealer.
Thank you again for the video. Not too long as you mentioned. I thought
your video was very informative and well made.
Cheers
73,
Robert
KB6QXM
"Ham Radio Open Conversation"
Yahoo group owner/moderator
----- Reply message -----
From: "Nige G7CNF" <g7cnf.n...@gmail.com <javascript:;>>
To: <flexradio@flex-radio.biz <javascript:;>>
Subject: [Flexradio] 2nd request-Heros
Date: Sun, Jan 13, 2013 12:37 pm
I did promise a while back that I'd put a video up for it or at least in
my case the "Heros SCR Preselector-CAT". Since I use one with a Flex-5K
I can vouch that if you're using tuned antennas there really shouldn't
be a need for one. If however you are using nonresonant antennas or in
proximity to a transmitting station then you might be surprised at the
improvements that can be had. With the greatest of respect to Tim's
comment I don't consider Taiwan's Premier radio station to be very close
to me in the UK however it is the station which causes me the greatest
problem! Or at least it did until I got the Heros Preselector. And just
to be clear, the incoming, coaxial cable has two line isolators so there
is negligible RF getting back into the shack (Tested with spectrum
analyser and current probe).
I have just managed to put the video up tonight and it can be found at
http://youtu.be/yeA8yyiK0X4
73's
Nige.
Re: [Flexradio] 2nd request-Heros
<
http://www.mail-archive.com/search?l=flexradio@flex-radio.biz&q=subject:%22Re%3A+%5BFlexradio%5D+2nd+request-Heros%22
Robert Costa, KB6QXM
<
http://www.mail-archive.com/search?l=flexradio@flex-radio.biz&q=from:%22Robert+Costa%2C+KB6QXM%22
Fri,
28 Dec 2012 14:25:26 -0800
<
http://www.mail-archive.com/search?l=flexradio@flex-radio.biz&q=date:20121228
Tim,
Thank you. As I own a 5000a and thanks to your answer, I guess that it is
one
accessory I do not need for my ham shack.
Thank you.
73,
Robert
KB6QXM
"Ham Radio Open Conversation"
Yahoo group owner/moderator
----- Reply message -----
From: "Tim Ellison" <t.m.ellison...@gmail.com <javascript:;>>
To: <flexradio@flex-radio.biz <javascript:;>>
Subject: [Flexradio] 2nd request-Heros
Date: Fri, Dec 28, 2012 1:53 pm
It is very useful if you have a lot of near by strong signal
interference causing intermod mixing on the ham bands. It is more
useful on the FLEX-1500 and FLEX-3000 as they do not have individual ham
band filtering like the FLEX-5000 does.
Tim Ellison
On 12/28/2012 2:07 PM, Robert Costa, KB6QXM wrote:
Has anyone used the HEROS pre-selector with their Flex? If so, how was
the
receive performance changed? Worth the money?
73,
Robert
KB6QXM
"Ham Radio Open Conversation"
Yahoo group owner/moderator
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