Re: LF: LF and VLF EbNaut

[N1BUG <paul@n1bug.com>]

Hi Joe,

No recent snow here, thankfully, but cold. I went out twice last
night to change taps on the LF matching transformer as the
temperature plummeted. Awoke to find a frozen drain pipe this
morning. But on a positive note, static levels on LF are down!

I beg to differ. For the average amateur radio operator like myself,
EbNaut is absolutely incomprehensible. The first thing people want
to know is what equipment is required for LF EbNaut and how much is
this going to cost? But answers are hard to come by. I could never
get an answer as to whether my HP 3325B with high stability option
was good enough. When I asked about amplifiers for EbNaut I was told
linear is a must, but now I find people are doing it with nonlinear
amplifiers. How are we to learn? I really wish someone would write
LF EbNaut for Dummies. If I could somehow come to grips with it, *I*
would be more than happy to write practical articles for those
coming behind who will also be struggling.

73,
Paul




On 12/9/18 12:52 PM, jcraig@mun.ca wrote:
> Hi Paul,
> 
> More snow last night, but I waited for the plough this time!
> I don't use a linear amp for EbNaut, and a DOCXO is good enough
> for LF (but not VLF). It isn't hard to do... its easier than the
> WSPR modes which are confounding to those of us who can't seem to
> find the microphone jacks on their home brewed transmitters!
> 
> 73
> Joe VO1NA
> 
> On Sun, 9 Dec 2018, N1BUG wrote:
> 
>> I was interested in trying EbNaut as well, but realistically it
>> never seemed practical. I would have to start over will all new
>> equipment for receiving, a linear amplifier for transmitting and a
>> GPSDO or two.
>>
>> I am progressing in the wrong direction. My HP 3325B has recently
>> come up dead and basic checks show it to have issues beyond my
>> ability to repair. I miss that generator every day!
>>
>> Rob, I'm sure there are more relevant / obvious places to put the
>> files, but if you don't get a better offer let me know. I have web
>> space and would  be happy to host the information.
>>
>> 73,
>> Paul
>>
>>
>> On 12/9/18 11:57 AM, Rob Renoud wrote:
>>> Hi Chris,
>>>
>>> I’ll be glad to document my current EbNaut TX setup.  I think a
>>> series of PDF documents might work best.  Do you have any
>>> suggestions regarding where these documents might be posted as I
>>> do not have a web site?
>>>
>>> Give me a week or so to bring the pieces together.
>>>
>>> 73, Rob - K3RWR
>>>
>>>> On Dec 9, 2018, at 10:10, Chris Wilson <dead.fets@gmail.com>
>>>> wrote:
>>>>
>>>>
>>>>
>>>> Hello Rob,
>>>>
>>>> Myself and I think Paul, N1BUG, both have these HP generators,
>>>> would you be willing to give a brief write up about how you are
>>>> using yours for Ebnaut please and what peripherals you are
>>>> using under what OS? I am still building up courage to give it
>>>> a go on LF, but I have to admit I find it all a little daunting
>>>> still.... Thanks!
>>>>
>>>> Sunday, December 9, 2018, 11:47:22 AM, you wrote:
>>>>
>>>>> Hi Jay,
>>>>
>>>>
>>>>> This is welcome news that the newly added periodic CW ID has
>>>>> no effect on your end.
>>>>
>>>>
>>>>> The HP3325A that I employ as the EbNaut driver makes it easy
>>>>> with separate but parallel phase (EbNaut signaling) and
>>>>> amplitude (periodic CW ID) inputs.
>>>>
>>>>
>>>>> Thanks & 73, Rob - K3RWR