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Fun times though Tony...

Strange to think that nearly sixty years ago I was sat at the table
making crystal sets and stuff and here I am, still doing it!

I blame Hans..
If it wasn't for him, I would have been out today cleaning the
windows and cutting the lawns as instructed by Mrs JVF...

Now I'm in trouble.....Hans's fault ;)

Philip G4JVF

--- In QRPLabs@..., Tony Volpe wrote:
>

> but do you remember how the frequency ran away when you went anywhere near
> the thing Philip?
>
> I had some kits marketed under the name 'HAC' - Hear All Continents. And
> you're right, they were ridiculously expensive and still are if you look on
> Ebay. It was handy though that you could just plug in a different coil and
> jump from Top Band receiving to Twenty Meters. Tuning in SSB on one of them
> was a lark though wasn't it?
>
>

> On 29 June 2013 19:47, Philip wrote:
>
> > **

> >
> >
> > Tell you what Tony, those Denco coils were expensive...
> >
> > A lot of my pocket money went towards buying a couple when I was a lad.
> >
> > Loved the idea of them coming in screen cans and that folded up paper
> > with circuits on...
> >
> > Them were the days :)
> >
> > Philip G4JVF
> >
> >

> > --- In QRPLabs@..., Tony Volpe wrote:
> > >
> > > Is that a 'Denco' filter?
> > >
> > > :))
> > >
> > > Do you remember the Denco plug in coils? long ago, I had a regenerative
> > > receiver kit that handled band changes just like that. They were really
> > > terrible things, they could jump several kilohertz if you moved your hand
> > > to the tuning knob or off it after you'd tuned something in.
> > >
> > > Bzb
> > >
> > >

> > > On 29 June 2013 19:11, Philip wrote:
> > >
> > > > **
> >
> > > >
> > > >
> > > > Done a mod today to make use of Hans pluggable LP filters...
> > > >
> > > > Mounted the filter sockets on some PCB on the lid of the case.
> > > > These are coax wired internally and I can just swap out filters without
> > > > opening the box.
> > > >
> > > > A small metal box then clips over the filter to screen and protect
> > them..
> > > >
> > > > Picture here...
> > > >
> > > >
> >
> > > >
> > > > Running a test on 10 meters WSPR today into a loft dipole..
> > > > Conditions are poor but I'm getting spotted and the U2 is nice and
> > stable
> > > >
> > > > Philip G4JVF
> > > >
> > > >
> > > > --- In QRPLabs@..., "Philip" wrote:
> > > > >
> > > > > Received my second kit this morning....thanks Hans
> > > > >
> > > > > I had a box ready prepared for it.
> > > > > This large box is designed so I can tinker with things like
> > > > > filters power supplies and PA stages hence the roomy interior.
> > > > >
> > > > > MK1 test bed is using a separate PA stage (no FETs on the kit board).
> > > > > Driven from the DDR, this PA transistor gives me the output powers
> > > > > shown scribbled in the circuit diagram.
> > > > >
> > > > > I'm going to add a drive pot so I can set the output on all bands to
> > > > > say 200mW or whatever.
> > > > > This PA can drive a simple IRF510 to 3 or 4 watts if needed.
> > > > > The kit board switches a relay which switches the 12 volt supply to
> > the
> > > > > PA when in transmit..
> > > > >
> > > > > Using external switchable LP filter box...
> > > > >
> > > > > Rear panel has a 5 pin DIN socket for the external GPS module....
> > > > >
> > > > > Much fun tinkering to come :)
> > > > >
> > > > > Photos in this link...
> > > > >
> > > > >
> > > >
> >
> > > > >
> > > > >
> > > > > Philip G4JVF
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>