Schematic as Jpeg for above Frequency Counter
Crystal tester built from Motorola crystal element for Maxtrac radio
then hooked to a frequency counter built
from a circuit from IK3OIL
and mounted in an Altoids style tin.
Manhattan Style construction is a time honored method of home brewing
ham radio projects. It is easy to follow along with a schematic
and build your circuit in the same order, sometimes nearly duplicating
the schematic on a piece of copper clad board. The usual method
is super-glueing pads of copper clad board, cut with a nibbler, shears
or scissors, on to another piece of copper clad which also serves as
the ground plane.
While trying to prototype a circuit with surface mount IC's I came up
with a novel idea for the pads and it uses recycled material.
Hams are known for having lots of recyclable material we just call it
our junk box.
I use a hacksaw or jeweler's saw to cut the edge connectors off of
computer cards and memory sticks. Both ISA and PCI cards can be
used and 72 pin simms are considered junk now, no matter what we paid
for it originally.
The ISA card's pads line up with standard DIP IC's and PCI card pads
line up with most surface mount IC's. Individual pads can be cut
from the ISA card edges with the jeweler's saw to make normal Manhattan
Style pads. The accompanying pictures should explain everything
you need to know.
a
.- k -.-
u ..- 3 ...--
b
-... l .-..
v ...- 4 ....-
c
-.-. m --
w .-- 5 .....
d
-.. n -.
x -..- 6
-....
π
e
. o
--- y -.--
7 --...
f
..-. p .--.
z --..
8 ---..
g
--. q --.-
0 ----- 9
----.
Fiestaware made with Depleted Uranium
h
.... r .-.
1 .----
stop .-.-.-
Audio file represents 3.5mr/h
i ..
s ...
2 ..---
comma --..--
j .---
t -
?
..--..
| Phonetic |
Letter |
Code |
| Alpha (AL-fah) |
A |
.- |
| Bravo (BRAH-voh) |
B |
-... |
| Charlie (CHAR-lee) |
C |
-.-. |
| Delta (DELL-tah) |
D |
-.. |
| Echo (ECK-oh) |
E |
. |
| Foxtrot (FOKS-trot) |
F |
..-. |
| Golf
(GOLF) |
G |
--. |
| Hotel (hoh-TELL) |
H |
.... |
| India (IN-dee-ah) |
I |
.. |
| Juliet (JEW-lee-ETT) |
J |
.--- |
| Kilo
(KEY-loh) |
K |
-.- |
| Lima (LEE-mah) |
L |
.-.. |
| Mike
(MIKE) |
M |
-- |
| November (no-VEM-ber) |
N |
-. |
| Oscar (OSS-cah) |
O |
--- |
| Papa (pah-PAH) |
P |
.--. |
| Quebec (keh-BECK) |
Q |
--.- |
| Romeo (ROW-me-oh) |
R |
.-. |
| Sierra (see-AIR-rah) |
S |
... |
| Tango (TANG-GO) |
T |
- |
| Uniform (YOU-nee-form) |
U |
..- |
| Victor (VIK-tah) |
V |
...- |
| Whiskey (WISS-key) |
W |
.-- |
| X-ray (ECKS-ray) |
X |
-..- |
| Yankee (YANG-key) |
Y |
-.-- |
| Zulu (ZOO-loo) |
Z |
--.. |
|
|
| Character |
Code |
| 1 |
.---- |
| 2 |
..--- |
| 3 |
...-- |
| 4 |
....- |
| 5 |
..... |
| 6 |
-.... |
| 7 |
--... |
| 8 |
---.. |
| 9 |
----. |
| 0 |
----- |
| Period
(Break) |
.-.-.- |
| Comma |
--..-- |
| Question
Mark |
..--.. |
| Double
Dash (BT) |
-...- |
| Fraction
Bar |
-..-. |
| End of
Message (AR) |
.-.-. |
| End of
Contact (SK or VA) |
...-.- |
|
| Commat
"@" sign (AC) |
.--.- . |
(Adopted by ITU in 2004) |
|
|
