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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Of course it could be the transceiver drifting, but curiously all I have been aware of so far moved in the same direction and approximately the same amount... who knows. Paul On 07/06/2018 06:09 PM, N1BUG wrote: > My only comment is that the ones I have heard seem to consistently > drift 1 to 2 Hz during a 2 minute WSPR transmission. So if you > wanted to use one for something like slow DFCW on LF, you would > probably have to do some work to stabilize it. > > Paul > > > On 07/06/2018 05:48 PM, Andy Talbot wrote: >> At that price, and that PA efficiency (15 amps at 13.8V for 50W out >> - very low) you'd have thought they could have dual-banded it, >> 137kHz and 475kHz >> A broadband linear PA, 100 - 500kHz is hardly rocket science >> >> Andy >> www.g4jnt.com >> >> >> On 6 July 2018 at 22:15, M0FMT > > wrote: >> >> In the UK both the National Gov TAX and the Local Gov TAX makes >> sure  the concept of Disposable Cash  cannot happen. >> >> 73 petefmt >> >> On Thu, Feb 8, 2018 at 2:12 PM, John Langridge > > wrote: >> >> >Ouch!  $660 US dollars plus shipping - that is a /lot/! >> >> Its a very solid unit, a true transverter, 50w out >> continuous with 90-100w intermittent duty with increased PA >> voltage and a receive section that is like no other.  The >> roofing filters make a huge difference and it has made the >> difference between hearing someone and not on many occasions. >> >> I highly recommend if you have some disposable cash... >> >> 73! >> >> John KB5NJD.. >> >> >> >> >> On Thu, Feb 8, 2018 at 7:53 AM, Roger Lapthorn >> > >> wrote: >> >> Ouch!  $660 US dollars plus shipping - that is a /lot/! >> >> On 8 February 2018 at 13:19, Clemens Paul > > wrote: >> >> >If you want a simple way to get started on 472kHz >> maybe my >> >transverter can help? This appeared in QST and in >> the book "LF Today". >> >> Here is a ready to go transverter from an Australian >> dealer. >> http://www.monitorsensors.com/ham-radio/630m-transverter >> [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.208.4.194 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [74.208.4.194 listed in wl.mailspike.net] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-Scan-Signature: f1498eebf16822c5ea85527a90413169 Subject: Re: LF: RE: Simple transverter for 472kHz Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Of course it could be the transceiver drifting, but curiously all I have been aware of so far moved in the same direction and approximately the same amount... who knows. Paul On 07/06/2018 06:09 PM, N1BUG wrote: > My only comment is that the ones I have heard seem to consistently > drift 1 to 2 Hz during a 2 minute WSPR transmission. So if you > wanted to use one for something like slow DFCW on LF, you would > probably have to do some work to stabilize it. > > Paul > > > On 07/06/2018 05:48 PM, Andy Talbot wrote: >> At that price, and that PA efficiency (15 amps at 13.8V for 50W out >> - very low) you'd have thought they could have dual-banded it, >> 137kHz and 475kHz >> A broadband linear PA, 100 - 500kHz is hardly rocket science >> >> Andy >> www.g4jnt.com >> >> >> On 6 July 2018 at 22:15, M0FMT > > wrote: >> >> In the UK both the National Gov TAX and the Local Gov TAX makes >> sure  the concept of Disposable Cash  cannot happen. >> >> 73 petefmt >> >> On Thu, Feb 8, 2018 at 2:12 PM, John Langridge > > wrote: >> >> >Ouch!  $660 US dollars plus shipping - that is a /lot/! >> >> Its a very solid unit, a true transverter, 50w out >> continuous with 90-100w intermittent duty with increased PA >> voltage and a receive section that is like no other.  The >> roofing filters make a huge difference and it has made the >> difference between hearing someone and not on many occasions. >> >> I highly recommend if you have some disposable cash... >> >> 73! >> >> John KB5NJD.. >> >> >> >> >> On Thu, Feb 8, 2018 at 7:53 AM, Roger Lapthorn >> > >> wrote: >> >> Ouch!  $660 US dollars plus shipping - that is a /lot/! >> >> On 8 February 2018 at 13:19, Clemens Paul > > wrote: >> >> >If you want a simple way to get started on 472kHz >> maybe my >> >transverter can help? This appeared in QST and in >> the book "LF Today". >> >> Here is a ready to go transverter from an Australian >> dealer. >> http://www.monitorsensors.com/ham-radio/630m-transverter >> >> Not cheap,though. >> See also >> http://www.monitorsensors.com/support/news/longest-630m-qso >> >> >> 73 >> Clemens >> DL4RAJ