[Laser] transverter and transceiver schematics (EXCELLENT but not first !!!)

[Tim Toast]

Hi all,

Dave AA1A, contacted me recently. He was having problems getting the 
list or signing up for it, so i am forwarding this for him till he gets 
it worked out:


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Re: [Laser] transverter and transceiver schematics (EXCELLENT but not
first !!!)
Tuesday, November 30, 2010 8:05 AMFrom: "dave.riley3" <dave.riley3 at verizon.net>
To: "Tim Toast" <toasty256 at yahoo.com>

Gudday, Tim...

I don't seem to get the laser list mail all the time, but copy you real
good...

Here are a couple of pix from my latest fetish with transverters... Have
used transverters from VLF ultrasonic to 10 ghz. all work the same and
any mode just like baseband rig... this one seems to get on LED and 
laser nicely...

Here is plug and play transverter used with IC706 with B+ pulled from
finals which just happens to make for +7 dbm to go right into mixer...

http://www.radiocom.net/600M/TxVerter2.jpg   Transverter 10kc to 2 mhz...

http://www.radiocom.net/600M/TXconverter.jpg    TX only

http://www.radiocom.net/600M/TxVerter3.jpg   Packaged

Am using this as way to get on 600 meters as WD2XSH/17  but goes 
anywheres down to almost DC...

Can you send me the correct info to properly apply for membership to
this list???
It becomes very interesting again so I am dusting off the laser pile...

TNX and 73s from Dave



On 11/18/2010 7:53 PM, Tim Toast wrote:
> hi Dave
> Yeah they're talkin about ya, hi. I was surprised myself when i saw that "first thing".. not the first transverter for sure. Here's where to go signup for the list:
> http://mailman.qth.net/mailman/listinfo/laser
> scroll down below the bad html and fill out the little form to signup.
>
> here is my website where i keep a text archive and lists of homepages/links and other stuff optical:
>   http://www.aladal.net/toast/comlinks.html
>
>
> --- On Wed, 11/17/10, dave.riley3<dave.riley3 at verizon.net>  wrote:
>
>> From: dave.riley3<dave.riley3 at verizon.net>
>> Subject: Re: [Laser] transverter and transceiver schematics (EXCELLENT but not first !!!)
>> To: laser at mailman.qth.net, toasty256 at yahoo.com
>> Date: Wednesday, November 17, 2010, 8:02 PM
>>
>> This is a coincidence...
>>
>> I get some laser comms via qth.net even though I am not
>> subscribed...
>>
>> Then I saw this message, hey that's me, sez me...
>>
>> Right on and I used the same scheme to get on 10 ghz as
>> well as 600M as
>> WD2XSH/17
>>
>> If anyone receives this, can you send info as to
>> subscribing to this
>> list again...
>>
>> It was fun reading my own history, hi hi ...
>>
>>
>> TNX from Dave - AA1A
>>
>>
>>
>> On 11/17/2010 8:10 PM, laser wrote:
>>> Congratulations on a nice circuit!!!
>>>
>>> However, I suggest you rephrase the title, "World's
>> first RF to Optical
>>> Tranverter" as it is not accurate.  Over the
>> years quite a few (on this
>>> reflector as well as elsewhere) have built
>> transverters specifically to
>>> allow multimode HF and VHF transceivers to be used to
>> modulate lasers mostly
>>> using SSB and NBFM.
>>>
>>> Although I haven't heard much out of them lately I
>> know Dave, AA1A, and
>>> John, K3PGP both were doing this many (~15?) years
>> ago.  Dave was using a
>>> 10.0 to 10.5 Mhz IF (10 Mhz xtal) and John was using
>> an 80 meter IF (3500
>>> Khz xtal) tuning 3500 to 4000 Khz.  From what I
>> remember they claimed the
>>> performance was quite spectacular using the K3PGP
>> front end and eliminated
>>> the issues with AC hum from stray lighting.  They
>> both claimed that although
>>> the gain decreased at higher frequencies the
>> sensitivity remained extrememly
>>> good and cautioned people to not confuse gain with
>> sensitivity.  I think
>>> both were hanging out around 10 to 25 Khz when driving
>> the laser.  I know
>>> they tried the Radio Shack Jumbo
>> LED.   High power LEDs like we have today
>>> were not available.
>>>
>>> About the same time period there was also someone on
>> the west coast (Kerry?)
>>> that was using a two meter IF which consisted of a 2
>> meter hand held radio
>>> feeding a double balanced mixer with a 144 Mhz
>> LO.  I know it performed well
>>> on NBFM but I'm not sure if it was ever used on SSB.
>>>
>>> I did a search for AA1A and originally found his
>> qsl.net url which linked to
>>> a dead end (when I checked this afternoon) but after a
>> bit more searching
>>> was able to find Dave's transverter circuit and even a
>> photo!
>>>>  From the AA1A website at http://www.radiocom.net/
>>> "This baseband transverter used with the subcarrier
>> laser equipment has
>>> other uses. It makes an all mode transceiver covering
>> 0-500 khz. out of a HF
>>> amateur transceiver by using the transverter port.
>> This will allow the
>>> reception of whistlers, VLF, part 15, Fema, Boulder
>> NIST 60 khz., European
>>> broadcasting, aero beacons, Lowfer band, DGPS
>> stations, the 500 khz. cw
>>> marine band and even the new 136khz  band.
>>>
>>> Schematic (dated 10/98 !!!) is here: http://www.radiocom.net/txvr.jpg
>>>
>>> Photo is here: http://www.radiocom.net/txvrpix1.jpg
>>>
>>> And so it seems, what is new is old and what is old is
>> new.
>>> =====
>>>
>>> ----- Original Message -----
>>> From: "Tim Toast"<toasty256 at yahoo.com>
>>> To:<laser at mailman.qth.net>
>>> Sent: Tuesday, November 16, 2010 4:11 PM
>>> Subject: [Laser] transverter and transceiver
>> schematics
>>>
>>>> hi all,
>>>> I have posted Stuart's LED transceiver/transverter
>> schematics on my
>>>> site at: http://www.aladal.net/toast/detector.html
>>>>
>>>> -toast