From: Rob Renoud <k3rwr@md.metrocast.net>
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Date: Sun, 9 Dec 2018 13:53:10 -0500
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References: <770330704.948115.1544284657492.ref@mail.yahoo.com> <770330704.948115.1544284657492@mail.yahoo.com> <60B8BB0C-D5F2-4056-B50F-9BBAFBB0E812@md.metrocast.net> <1UQfUE2pMg.248Lgi6ej41@optiplex980-pc> <C39DB96E-5216-4B62-97E3-CAF09941DAFE@md.metrocast.net> <132032728.20181209151032@gmail.com> <1412C94E-308B-467C-B5E7-33E4D0497FEC@md.metrocast.net> <ce51d98d-6fa5-6b34-1bda-1ee5db959978@n1bug.com> <Pine.LNX.4.64.1812091417070.15509@plato.ucs.mun.ca>
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To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: LF and VLF EbNaut
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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
>>