Re: LF: LF and VLF EbNaut

[N1BUG <paul@n1bug.com>]

Hi Rob, Joe, EbNaut,

I would certainly like to see a write-up on Joe's setup along with
any relevant schematics if available.

Yours too, Rob, even if (maybe) it is more than needed for LF.

Wasn't someone working on a web site devoted to EbNaut at LF? I
can't seem to find that info now but I'm not fully up to speed
today. I'm semi-down with suspected food poisoning.

If not, I will up my earlier offer. If those who have had success
with EbNaut at LF will share information on what they used and how
they did it, I will offer to host it all in one place. Maybe we
could put together a LF EbNaut FAQ.

73,
Paul



On 12/9/18 1:53 PM, Rob Renoud wrote:
> Hi Joe, Paul and Chris,
> 
> I’m wondering if a technical description of Joe’s LF EbNaut setup
> might be useful to you as, I believe, you are both using
> non-linear amplifiers.
> 
> My system is built around using the linear Hafler amplifiers and
> also with an eye toward doing VLF transmissions at some point.
> As such, my system uses GPS-based time and frequency references
> throughout and may have a level of complexity that is not
> required at LF.
> 
> Thoughts?  I’ll still prepare a summary of my system for sharing
> as that may be useful as well.
> 
> 73, Rob - K3RWR
> 
>> On Dec 9, 2018, at 12:52, 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
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> -- Best regards, Chris mailto:dead.fets@gmail.com