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Showing here is an antique telegraph straight key for sending or practicing morse code. Specifically, this is an MFJ-550. Thick black plastic base, spring balance intact. The bottom is marked “Japan.” This key is in excellent condition and has a nice ‘click’ and return.
Morse Code and the telegraph were developed in the 1830’s and 1840’s by Samuel Morse after receiving news of his wife’s death too late to attend the funeral. The telegraph revolutionized worldwide communication by transmitting electrical signals over a wire laid between stations.
Morse developed a code (bearing his name) that assigned a set of dots and dashes to each letter of the alphabet and allowed for the simple transmission of complex messages across telegraph lines.
Although the telegraph fell out of widespread use by the start of the 21st century, replaced by the telephone, fax machine and internet, it laid the groundwork for the communications revolution that arguably led to the later advancements.
Morse Code:
A •–
B –•••
C –•–•
D –••
E •
F ••–•
G –•
H ••••
I ••
J •–––
K –•–
L •–••
M ––
N –•
O –––
P •––•
Q ––•–
R •–•
S •••
T –
U ••–
V •••–
W •––
X –••–
Y –•––
Z ––••
. •–•–•–
, ––••––
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I gladly accept returns and exchanges
Just contact me within: 5 days of delivery
Ship items back to me within: 14 days of delivery
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The following items can't be returned or exchanged
Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:
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- Digital downloads
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Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.