[Lowfer] Lowfer KE

[KA4SEY]

Thanks Jay, I'm going to mess with the antenna tomorrow. Having issues with the transmitter right now. It seems my 5 volt regulator went bad so that's why it quit transmitting. Once I get it fixed I'm going to do a few more modifications and see how that goes.KaseySent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: jrusgrove at comcast.net Date: 11/21/20  6:20 PM  (GMT-05:00) To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net> Subject: Re: [Lowfer] Lowfer KE KaseyIf the antenna is not tuned to the resonant peak transmitted signal strength will be dramatically reduced. The neon bulb will act as a resonance indicator but you're going need some sort of tuning arrangement to hit the peak of resonance. You could add or subtract turns on your existing loading coil but tuning will be so critical that it may only take a fraction of a turn change to hit resonance ... and it's easy to miss that. That's why a variometer is so effective ... it provides a fine adjustment.Until you get time to fabricate a variometer you can determine the resonant frequency by connecting a receiver to the loading coil in place of the transmitter. Tune the receiver above and below your beacon frequency looking for a peak in background noise. If the receiver has half way decent sensitivity the peak should be obvious. You can then add or remove turns (or fractions of a turn) to your existing loading coil until the receiver noise shows that you've hit resonance. This will at least get you in ballpark.Hope this helps!Jay W1VD            ----- Original Message -----From: KA4SEY <ka4sey at gmail.com>Reply-To: Discussion of the Lowfer (US, European, & UK) and MedFer bands <lowfer at mailman.qth.net>To: Discussion of the Lowfer (US, European, & UK) and MedFer bands <lowfer at mailman.qth.net>Sent: 11/21/2020 3:42:50 PMSubject: Re: [Lowfer] Lowfer KE________________________________________________________________________________Thank you, I can definitely get both of those better this winter. The variometer may be the hardest but it will probably be the most effective.KaseySent from my Verizon, Samsung Galaxy smartphone-------- Original message --------From: Douglas Williams <williamsdoug1966 at gmail.com> Date: 11/21/20  3:25 PM  (GMT-05:00) To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net> Subject: Re: [Lowfer] Lowfer KE Excellent! I will tell you right now, you have everything going for you tosucceed here. Your antenna configuration is a classic. Your coil looksgood. I think the only thing lacking is improving your ground radials andperhaps adding a variometer to your final coil, for fine tuning.D.On Sat, Nov 21, 2020 at 3:12 PM KA4SEY <ka4sey at gmail.com> wrote:> I have a neon bulb. I will try that.>______________________________________________________________Lowfer mailing listHome: http://mailman.qth.net/mailman/listinfo/lowferHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Lowfer at mailman.qth.netPost must be less than 50KB total for message plus attachment!This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html______________________________________________________________Lowfer mailing listHome: http://mailman.qth.net/mailman/listinfo/lowferHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Lowfer at mailman.qth.netPost must be less than 50KB total for message plus attachment!This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html______________________________________________________________Lowfer mailing listHome: http://mailman.qth.net/mailman/listinfo/lowferHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Lowfer at mailman.qth.netPost must be less than 50KB total for message plus attachment!This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.html