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Date: Sun, 29 Jun 2014 15:59:15 +0100
From: M0FMT <m0fmt@yahoo.co.uk>
To: rsgb_lf_group@blacksheep.org
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Subject: Fw: Re: Re: LF: Fw: : Re: [rsgb_lf_group] Re:: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver: How to get HF to work?
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Thanks for the info Mal .......... Sorry didn't hear the earlier QSO but it=
 answers the question thanks


Thanks Graham. Been lucky up to now got two Sticks they double as my PC TV =
and dig radio RX and work incredibly well since they double as a Wide band =
SDR RX for ham radio they are useful tools.
The Up converter although a bit bulky works fine and am loathed to cut into=
 the sticks but may have a play. Thank you for the info.... it has been log=
ged!

73 es GL Pete M0FMT IO91UX


--- On Sun, 29/6/14, mal hamilton <g3kevmal@talktalk.net> wrote:

> From: mal hamilton <g3kevmal@talktalk.net>
> Subject: Re: Re: LF: Fw: : Re: [rsgb_lf_group] Re:: 100KHz-1.7GHz full ba=
nd UV HF RTL-SDR USB Tuner Receiver: How to get HF to work?
> To: rsgb_lf_group@blacksheep.org
> Date: Sunday, 29 June, 2014, 14:16
> Pete
> I was on this morning and worked G3DXZ also heard the others
> afterwards in=20
> QSO
> MAL/G3KEV
>=20
> ----- Original Message -----=20
> From: "M0FMT" <m0fmt@yahoo.co.uk>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Sunday, June 29, 2014 12:50 PM
> Subject: Fw: Re: LF: Fw: : Re: [rsgb_lf_group] Re::
> 100KHz-1.7GHz full band=20
> UV HF RTL-SDR USB Tuner Receiver: How to get HF to work?
>=20
>=20
> Hi Graham
>=20
> As you may remember I use an up converter for HF. I would
> like to try the=20
> direct conversion method can you advise where I make the
> connection. Have=20
> you done a close up jpg of the chip??
>=20
> Mal as a matter of interest were you keying up a coup[le of
> time this=20
> morning on about 472.5 at=C2=A0 around 10:20 UK time.? I was
> listening to G3DXZ=20
> who did a break ditdit dahdah ditdit's when we heard a
> couple of short=20
> dashes...... which is unusual considering the activity on
> the band....... no=20
> "pack drill" just an open question?.
>=20
> 73 es GL Pete M0FMT IO91UX
>=20
>=20
> --- On Sun, 29/6/14, Graham <g8fzk@g8fzk.fsnet.co.uk>
> wrote:
>=20
> > From: Graham <g8fzk@g8fzk.fsnet.co.uk>
> > Subject: Re: LF: Fw: : Re: [rsgb_lf_group] Re::
> 100KHz-1.7GHz full band UV=20
> > HF RTL-SDR USB Tuner Receiver: How to get HF to work?
> > To: rsgb_lf_group@blacksheep.org
> > Date: Sunday, 29 June, 2014, 12:23
> >
> >
> >
> >
> >
> > Thanks Mal,
> >
> > Tom , wired them direct last night
> > .... interesting
> > angle , seems they have dropped half
> > of a
> > normal dongle into a docking
> > board , The
> > issue I was interested in was the Ae
> > feed
> > for low bands , and from the image ,
> > its visible ,
> > that the feed is single ended , via the
> > toroid ., he
> > also plotted the gain , which falls
> > off to
> > LF , which is similar to the device
> > being
> > Cap coupled , both are single ended
> > methods ...
> > 100KHz is listed as the lower
> > operating
> > frequency , in this case its possible
> > the transformer
> > is the reason ......
> >
> > I think a small pre-amp [ 10 dB
> > ?] with
> > gain roll off to HF would be a
> > better
> > option , as the chip works in
> > a direct
> > coupled set up , down to audio , a pre
> > amp could
> > also provide the ~~ 200
> > ohms input match as well
> >
> >
> > But for round =C2=A310/15 supplied
> > as-seen not
> > a bad option
> >
> > 73-G,
> >
> >
> >
> >
> > From: mal hamilton
> >
> > Sent: Sunday, June 29, 2014 8:31 AM
> > To: rsgb
> >
> > Subject: LF: Fw: : Re: [rsgb_lf_group] Re::
> > 100KHz-1.7GHz full band
> > UV HF RTL-SDR USB Tuner Receiver: How to get HF to
> > work?
> >
> >
> >
> > ----- Original Message -----=20
> > From: DK1IS DK1IS@kabelmail.de
> > [rsgb_lf_group]
> > To: rsgb_lf_group@yahoogroups.co.uk
> >
> >
> > Sent: Saturday, June 28, 2014 12:09 PM
> > Subject: Re: : Re: [rsgb_lf_group] Re::
> > 100KHz-1.7GHz full band UV
> > HF RTL-SDR USB Tuner Receiver: How to get HF to
> > work?
> >
> >
> >
> >
> >
> >
> >
> > Hello Graham,
> >
> > Please see
> > below!
> >
> > 73,
> > Tom,DK1IS
> >
> > Am 27.06.2014 22:52, schrieb g0nbd@hotmail.com
> > [rsgb_lf_group]:
> >
> >
> >
> >=C2=A0=C2=A0=C2=A0Tom,
> >
> >
> >=C2=A0=C2=A0=C2=A0At least its running !
> > Yes it
> > is and not so bad!
> >
> >
> >
> >
> >
> >
> >
> >
> >=C2=A0=C2=A0=C2=A0'' only the
> >=C2=A0=C2=A0=C2=A0q-input
> > works''This
> > only means
> > that if you click the ExtIO button at the HDSR user
> > interface "RTL Setting"
> > offers to you at Direct Sampling "Disabled" (for
> > VHF/UHF), "I input" (no
> > stations at HF, only noise) and "Q Input"
> > (stations at HF).
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >=C2=A0=C2=A0=C2=A0Do I
> > assume,
> >=C2=A0=C2=A0=C2=A0that they are using a single
> > ended feed
> >=C2=A0=C2=A0=C2=A0for the low band
> > ?Having no
> > datasheet for the
> > RTL2832U I=C2=B4m not sure about this. As you can see on
> the
> > picture enclosed at the
> > lower side of the pcb there is a small ferrite toroid
> for
> > the HF signal with two
> > output wires, first being fixed with silicone on the
> > RTL2832U housing and then
> > going to two adjacent pins of the IC - whatever this
> means.
> >
> >
> >
> >
> >
> >
> >
> >
> >=C2=A0=C2=A0=C2=A0Is there
> >=C2=A0=C2=A0=C2=A0some form of pre-amp / pass
> > band
> >=C2=A0=C2=A0=C2=A0filter before the input
> >=C2=A0=C2=A0=C2=A0?There
> > is no pre-amp but you
> > can see a two stage low pass filter on th left side of
> the
> > ferrite toroid (two
> > coils and 6 capacitors)
> >
> >
> >
> >
> >
> >
> >
> >
> >=C2=A0=C2=A0=C2=A073-G,
> >
> >
> >
> > __._,_.___
> >
> >
> >
> > Posted by: DK1IS <DK1IS@kabelmail.de>
> >
> >
> >
> >
> >
> >
> >=C2=A0 =C2=A0=C2=A0=C2=A0Reply
> >
> >=C2=A0 =C2=A0 =C2=A0=C2=A0=C2=A0via web post
> >=C2=A0 =C2=A0=C2=A0=C2=A0=E2=80=A2
> >=C2=A0 =C2=A0=C2=A0=C2=A0Reply
> >
> >=C2=A0 =C2=A0 =C2=A0=C2=A0=C2=A0to sender
> >=C2=A0 =C2=A0=C2=A0=C2=A0=E2=80=A2
> >=C2=A0 =C2=A0=C2=A0=C2=A0Reply
> >
> >=C2=A0 =C2=A0 =C2=A0=C2=A0=C2=A0to group
> >=C2=A0 =C2=A0=C2=A0=C2=A0=E2=80=A2
> >=C2=A0 =C2=A0=C2=A0=C2=A0Start
> >
> >=C2=A0 =C2=A0 =C2=A0=C2=A0=C2=A0a new topic
> >=C2=A0 =C2=A0=C2=A0=C2=A0=E2=80=A2
> >=C2=A0 =C2=A0=C2=A0=C2=A0Messages
> >
> >=C2=A0 =C2=A0 =C2=A0=C2=A0=C2=A0in this topic (5)
> > Visit
> >
> > Your Group
> >
> >=C2=A0=C2=A0=C2=A0New
> >
> >=C2=A0=C2=A0=C2=A0Members 2
> >
> >
> > =E2=80=A2 Privacy
> > =E2=80=A2
> > Unsubscribe
> >
> > =E2=80=A2 Terms
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> >
> >
> >
> > .
> >
> > __,_._,___
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>=20
>=20
>