Yes, i can imagine that. Especially such attachments are most often
classified as "unsafe". But in this case, you know, they aren't ;-)
73, Stefan
Am 01.06.2010 12:19, schrieb mal hamilton:
Stefan
Some of your emails are flagged
UNSAFE ATTACHMENTS or SPAM
de mal/g3kev
-----
Original Message -----
Sent:
Tuesday, June 01, 2010 10:49 AM
Subject:
LF: vertical antenna calculation tool
LF, VLF,
Once i have created an Excel sheet for calculating my vertical kite
antenna on 137 kHz. Today i want to share it with you. It is in german
language but usable for everyone anyway i think. It calculates all
important parameters of a vertical antenna and shows the resonance
curve.
I am NO expert in writing excel sheets and it can surely be done much
more impressive and pretty in Java or so, but it just works and shows
me what happens to the system, if i change one parameter.
In the yellow fields above, you can type the given parameters like TX
power, antenna height, losses and so. In the lower fields, the needed L
for resonance, antenna efficiency, EMRP, ERP, Lambda, wire voltage and
so on is calculated. Additionally you can see the resonance curve of
the antenna...
If you want you can use or modify it, or throw it away ;-)
73, Stefan/DK7FC
|
|
