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Ahh! Sorry Pete
This is probably me still learning how to drive Thunderbird
through AOL.
The "learning-curve" is still in a strange part of the hysterisis.
When I have achieved the correct "bell" shape I'll be happier than
the rest of you for I shall have successfully come out on the
other side :>))
I promise to Evolve from Evolution!
73
On 11/04/13 19:17, M0FMT wrote:
Pat there's something up with your e-mail because it
keeps sending the same thing twice? i.e. two e-mails for the
price of one.
73 es GL Pete M0FMT IO91UX
Well,
you might have been happy, Pete. I discovered
that the family cat's whiskers wouldn't work
with a bit of coke and we had to go back to a
pair of baked bean cans and string!
On 11/04/13 16:20, M0FMT wrote:
And we all live in a hole in the road but
we were happy!!.....:0)
73 es GL Pete M0FMT IO91UX
And
Wireless Set No.17 for £2:19:6
(2Volt accumulator and HT
Battery 10/- extra)
And we're all getting older!
73
On 11/04/13 12:18, M0FMT
wrote:
Hi Graham
How young you are
my introduction to
Tottenham Court Road
(Proops?) , Lisles
Street (GW Smiths),
Charring Cross and The
Edgeware Road about
1956. Aaaaah those were
the days. learnt
a lot about Radio, Life,
the Universe and
everything there......
hee!
Got my R107 from
Lisle Street with money
save from my apprentices
pay. Carried it (abt 1
CWT) via bus to Kings
Cross in the days when
the conductor would jump
off the bus and give you
had to get it on
board........ imagine
that on a "Bendy Bus"
today. See http://www.retinascope.co.uk/lislestreet.html for
the full story.
OK on the stick
info yes but I am CW
only really can't get
too excited about
sterile data although as
you know I do partake occasionally.
73 es GL Pete M0FMT
IO91UX
R Pete
Well ,
its possible
to use the
emergency
vfo , but
that results
in a very
unstable
signal , I
remember down
the Tottenham
court road ,
there where
tea chests of
crystals , but
that was
1970 .. seems
a lot of
the
traditional
firms have
closed ,
One of
the £5 dds
with a
driver would
work , but
they want to
keep it
standard
DS -
That's really
the
'correct'
situation ,
that -33 db
decode, -3 db
lower than
normal was
a good
indication
that the
system is
working
, over
ranging the
a/d is the
only problem
. I think
dynamic range
is 60 d b
after
processing ,
is it 3 db
per bit ? 8
bits , 24 db
+ 3 that's
27 dB ? 500:1
? , but
by
removing
qty 2
mixers and
2
oscillators
, [ may be 3
oscillators 1
, hf-up-conv
2 , pll conv
osc 3 ref
osc ) that
is a lot of
noise +
jitter
removed from
the signal
path as well
as imd
from 2
mixers , I
found a
attenuator
helped for
mw and I
have a
mw-filter ,
which
cleaned up
sw bands
...... nice
to have a
panoramic
display , 2
mhz this time
, the ra17
was 1 mhz
and 28
valves + 20
ish > in
the radio
73-G.
Sent:
Thursday,
April 11, 2013
10:47 AM
Subject:
Re: LF: Wanted
10XJ or FT243
XTALS Range
236.25 236.75
KHz
OK
Graham
Thought
it was home
brew
retro..........
I am in that
mode and think
everbody else
is! What do
you do at the
moment inject
a Sig Genny?
Have
you checked
the net or
checked out
Vincent -
QuartzLab etc?
Anyway
what's that
master osc
circuit. I
build from old
RADCOM (pre
1975 when they
published real
amateur radio)
and PW,QST
etal. I use
modern xtals
with no known
issues. Well
trying to get
third overtone
for 10m not to
chirp is an
issue with me
at the
moment.
OK
yes got a
stick on its
way didn't
want to tear
up my existing
upconverter
design. But
not sure there
is much wrong
with the UC
approach it
works for me.
But want to
try the direct
approach. Do
you get much
Cross mod and
IM products?
73 es GL
Pete M0FMT
IO91UX
Ok Pete
Q where
to have
them made ?
The set
, Marconi
Ocean span
1950's valve
tx needs
the big
rock's as
the
oscillator
pass's quite
a lot of
power via
them ...hc6u
are no good
, drive level
is very low -
the ones
fitted are
the wired-
gold flashed
ones , so
cannot etch
into the band
...
the
gang want
to keep it
standard
73 -G.
Ps
waiting for
qty-3 £6
dongles : )
Sent:
Wednesday,
April 10, 2013
11:43 PM
Subject:
Re: LF: Wanted
10XJ or FT243
XTALS Range
236.25 236.75
KHz
Hi
If
you want to
spend a small
fortune get
them cut.
However build
a Mixer VXO
from El cheapo
standard xtals
and or old PMR
rocks. Then at
your next
rally buy a
couple of
Screw together
10xj or FT243
rocks of any
frequency and
put the
El-cheapo
xtals inside.
And Hey Presto
you have Retro
rocks.
I
have a small
all valve 472
tx that uses
6.00
-6.472=0.472
vxo-able a
couple of kc/s
12ax7-6am6-6cl6=
4wattso/p.
Local QRP rig.
Hope
this helps
73 es GL
Pete M0FMT
IO91UX
Wanted
10XJ or
FT243 XTALS
Range
236.25
236.75 KHz
Q Is
there any
manufacture
of crystals
in this
range ?
Or
Surplus
items
available
QTY 1
or 2 off
TNX-
Graham
G0NBD
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
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