[Lowfer] Lowfer JH

[John Hamer]

I worked on the mobile receive amplifier and got the feedback issue sorted.
I had a laptop running argo the whole way to work and did successfully
receive my signal at work, 15 miles away, with my 1 foot loop in the back
window of my car. The only thing I need to do now is make an external BFO,
because the one in my handheld radio shack receiver is not stable.

As far as not being able to get 1 watt from my transmitter running from a
12v battery, I think I'm going to change the output filter of my
transmitter to something lower than 50 (maybe 35?) ohms. Then I can use a
different tap on my antenna and should be able to get the full watt. I'll
try and do that this weekend.

On Mon, Dec 9, 2019 at 1:43 PM John Hamer <wilbur0611 at gmail.com> wrote:

> Andy,
>
> I need to add 2200 meters to my 6 foot loop. 1649 miles is very
> impressive. I think the 100 miles for lowfer TH in 2016 is my record for
> receiving. Or at least what I have documented.
>
> I'm currently trying to make a small receiver setup to use for testing my
> transmitter remotely. I have actually had some success using a homemade
> TL082 J-fet op-amp amplifer. I do have feedback issues at higher gains, but
> that may just be my PCB/Wiring. After I get that, I can hopefully get an
> idea how my changes affect radiation. I am using a small loop for my
> antenna, but ideally I would have some sort of short whip attached to my
> truck. Do you know of anyone having any success with something around 2 to
> 3 feet? I have tried a 3 foot wire connected to a tank circuit, but there
> is just not much of a signal on it. I didn't have much of a ground plane
> though.. I'm only shooting for 10 - 15 miles away.
>
> I look forward to your findings.
>
> Regards,
> John Hamer
>
> On Mon, Dec 9, 2019 at 11:47 AM Andy - KU4XR via Lowfer <
> lowfer at mailman.qth.net> wrote:
>
>>  Hi John:
>>
>> Good news... Any increase in current at the antenna will make a
>> difference for sure.
>> I am looking forward to looking again as I have by chance fumbled onto an
>> antenna
>> setup that has " Drastically " improved my LF reception. I have been
>> trying it for a
>> couple of nights on 2200meters - and - daytime reception is there now !!
>> Haven't had
>> that before... I am receiving WH2XND in Arizona ( 1649 miles ) throughout
>> the day now.
>> I plan to run the gammot of lowFERs now and see the difference in the
>> days ahead.
>>
>> 73 for now:
>>
>> Andy - KU4XR
>>
>>
>>      On Monday, December 9, 2019, 11:09:34 AM EST, John Hamer <
>> wilbur0611 at gmail.com> wrote:
>>
>>  I added 10 40foot ground plane wires this weekend, which after re-tuning
>> for resonance, increased the current to the final by 12ma. Before the
>> ground plane wires, I only had a ground rod at the base of the antenna.
>> This unfortunately puts me in-between two taps for impedance matching. I
>> chose the closest resistance, which was a little higher than 50, which put
>> the output to the final at .75W with a fully charged battery.
>>
>> John Hamer
>>
>> On Sat, Dec 7, 2019 at 11:45 AM John Hamer <wilbur0611 at gmail.com> wrote:
>>
>> > Thank you for the report Andy. My last record was 80 miles from w4dex
>> when
>> > I lived in florence sc. It appears I'm moving in the correct direction.
>> >
>> > Regards,
>> > John Hamer
>> >
>> > On Sat, Dec 7, 2019, 10:49 AM Andy - KU4XR via Lowfer <
>> > lowfer at mailman.qth.net> wrote:
>> >
>> >> Greetings all
>> >> Last night was unusually noisy here with static peaking to 30 over S9,
>> >> even with that level of noise I copied JH at times throughout the
>> night. A
>> >> quieter night will allow good copy. Thanks for the signal John.
>> >> Andy
>> >>
>> >> Sent from Yahoo Mail on Android
>> >>
>> >>
>> >> ______________________________________________________________
>> >> Lowfer mailing list
>> >> Home: http://mailman.qth.net/mailman/listinfo/lowfer
>> >> Help: http://mailman.qth.net/mmfaq.htm
>> >> Post: mailto:Lowfer at mailman.qth.net
>> >> Post must be less than 50KB total for message plus attachment!
>> >>
>> >> This list hosted by: http://www.qsl.net
>> >> Please help support this email list: http://www.qsl.net/donate.html
>> >>
>> >
>> ______________________________________________________________
>> Lowfer mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/lowfer
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Lowfer at mailman.qth.net
>> Post must be less than 50KB total for message plus attachment!
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> ______________________________________________________________
>> Lowfer mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/lowfer
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Lowfer at mailman.qth.net
>> Post must be less than 50KB total for message plus attachment!
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>