[Lowfer] Multicoupler

[Douglas D. Williams]

Thanks David. It is good to know that the Stridsburg products are not
potted. I admit that I assumed they were European because of the name, but
now I see they are based in Louisiana. :-)

Potting is fine for passive devices, but I hate to see it with active
devices.

Yes, I have a Wellbrook loop, and in the past I have owned (and later sold)
an RF Systems DX-1 Pro (both potted, with active devices).

That Stridsberg VLF/LF multicoupler you linked appears, from the specs, to
be a very good product. Please let us all know how it works out.

I find it to be extremely convenient to use one antenna with multiple
receivers.

Thanks for the heads-up!

73, Doug KB4OER




On Fri, Dec 21, 2012 at 12:26 PM, David L. Wilson <dwilson314 at verizon.net>wrote:

> I have their HF model.  I noted it is easily opened, not potted, but used
> surface mount components and the active component (IC) was unfamiliar.  It
> works fine.  One of those failed some years ago and I have just today asked
> about repair.  I have also ordered the VLF/LF mode.
>
> I regularly use their VHF/UHF models.
>
> Sounds like you may have bought the Wellbrook loop antennas-everything
> potted there but I figured out the power inserter by measuring across all
> the external connections.
> --
> David L. Wilson
> dwilson314 at verizon.net
>
>
> > -----Original Message-----
> > From: lowfer-bounces at mailman.qth.net [mailto:lowfer-
> > bounces at mailman.qth.net] On Behalf Of Douglas D. Williams
> > Sent: Friday, December 21, 2012 11:40 AM
> > To: Discussion of the Lowfer (US, European, &amp, UK) and MedFer bands
> > Subject: Re: [Lowfer] Multicoupler
> >
> > David,
> >
> > Thank you for bringing this product to our attention.
> >
> > I recently (within the last six months) had Kiwa Electronics custom build
> a two
> > port splitter/combiner with a frequency response of 1.5 kHz to 2.0 MHz. I
> > have been extremely pleased with the Kiwa unit, and have been using it to
> > use the same active whip antenna with two different receivers.
> >
> > The unit you linked has a narrower frequency response (which may be a
> > good thing if you have no interest in receiving above 500 kHz), twice as
> many
> > output ports, and appears to have a built in amplifier to eliminate the
> > inherent loss in a passive device. The Kiwa unit I had built is
> completely
> > passive, goes lower and higher in frequency, has greater port to port
> > isolation (if I remember correctly), and has an inherent 6dB loss from
> the
> > input port to the two output ports. Also, it appears to me that the Kiwa
> unit,
> > being passive, would allow you to use two different antennas with one
> > receiver, while the Stridsberg unit, having an active amp, would only be
> > intended to be used as a splitter.
> >
> > The unit you linked appears to be solidly built. I would wonder if, since
> it has
> > an active amp, it is able to be easily opened up and repaired by the end
> user
> > should a failure happen? Hopefully, it's not "potted" like some European
> > devices I have purchased in the past.
> >
> > 73, Doug KB4OER
> >
> >
> >
> >
> >
> > On Fri, Dec 21, 2012 at 11:07 AM, David L. Wilson
> > <dwilson314 at verizon.net>wrote:
> >
> > > I have noted that Stridsburg has a 4 output active multicoupler now for
> > > VLF/LF.   I can be found on
> > > http://www.stridsberg.com/prod01.htm Look for MCA04VLF.  I have
> > > ordered one to see how well it works.
> > > Has anyone tried one of these?
> > >
> > >
> > >
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