[Laser] Laser x HF rig converter

Tue, 15 Jan 2002 21:24:24 -0200

Dave, you  commented below that " ... we have a
transverter which plugs into the HF rig ...".
Could you please give me more details, specifically the schematic diagram?
Please remember I live in Brazil, and some components are not very easy to
find!
Thank you in advance for the usual attention and courtesy!
73 es DX de PY2 ANE, Orlando

----- Original Message -----
From: "David Riley" <[email protected]>
To: <[email protected]>
Sent: Monday, January 14, 2002 2:13 PM
Subject: Re: [Laser] web sites/activity

> Johnathan et al,
>
> Baseband is easiest and works well for DX and local, but, we have a
> transverter which plugs into the HF rig which gives us a milliwatt for PA
> amp and great receiver from DC to 500kc. any mode. This makes for real
good
> commercial quality all mode for VLF, ultrasonic and MF comms either into
an
> antenna of laser, even modulates a gunnplexer on 10ghz.
> The narrower the BW the more the DX as seen here, have tried TV and 10mb
> ethernet but not for long haul especially with preceip and other WX.
> Best response so far is the 800hz. sig from the ve2IQ interface or sound
> blaster DSP.  Probably psk-31 would be good but long integrated 800hz dsp
> with fftzz ( ve2IQ ) left on all night sees plenty of sigs from
> 'someplace'..
> Also tried TV remote for GREAT DX and remote control..  Presently am
trying
> SCADA and a way to fully modulate a he-ne, nil so far..  Think Steve is
> right, diode laser best for this but like stability of hene for 'bounce'
and
> 'doppler' reception...  Chick Wb6IBP? use to have some 'crystal'
modulators
> for he-nes but I havn't tried them or seen them used.. That would be a
good
> 'digital' modulator...
> Also use 30mw laser into reverse end of telephoto lense which makes a tube
> of light for cloud and layer bounce, Columated with this is a ccd camera
> that sees returns and 4" lens receiver into a PIN front end for data and
> 'distance' measurements. This is about as good as the best tube receiver
at
> VHF was during the early 2M days here.
> As soon as we establish an 'easy' link, I think things will open up and
> become more interesting for more do it yourselfers...  One can get started
> nicely from RadShack wall stock. Havn't seen the BEST of the 100k ft.
layer
> bounce as yet either..
>
> 73s from Dave - AA1A - FN42PB
> ----- Original Message -----
> From: "W2MXW" <[email protected]>
> > Question...what kind of modulation would you guys prefer...? I was
> thinking
> > FM w/subcarrier, maybe 20 or 25 kHz (keeping within the range of the
K3PGP
>
>
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