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G0FTD > TECH 12.01.05 00:21l 91 Lines 2831 Bytes #999 (0) @ WW
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Subj: RFCALC78.ZIP info
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Sent: 050111/1750Z @:GB7SXE.#38.GBR.EU #:18897 [Hastings] FBB7.00i $:679273G0FT
From: G0FTD@GB7SXE.#38.GBR.EU
To : TECH@WW
RFCALC78 - The changes.
* Update this hotch potch of notes !
* There were a couple of labelling errors in the OHMS LAWS section - now
corrected at last.
* Added spark gap distances (good for capacitors and lightning protection)
using Paschen's Law
* Added E and F layer angle of radiation versus distance per hop
* Added voltage breakdown in coax data (useful when making coaxial
capacitors)
* Added RG174 data to coax data
[LIST OF AVAILABLE CALCULATIONS & DATA]
L network matching component values
Capacitive and inductive reactances
Bandwidth tuned circuit
Radio range and VHF/UHF/Microwave
Freespace path loss
Resonance series tuned circuit
Resonance // tuned circuit
Power received from tx to rx
Groundwave calculation (accurate to about 50Mhz)
Near field region of an antenna (V5 had errors - now fixed).
Calculation of skin effect on conductors (2 methods)
Series Resistance calculator for LED's, Lamps and crude nicad charging
Impedance calculator including phase and power factor and relative SWR.
Quarter wave transformer calculator
Electrical quarter wave calculator
Impedance of custom air spaced coax
Air spaced capacitor designer
All of Ohms law and power laws
Conversion of AC and DC values RMS etc
Amidon cores inductance designer and related info included.
Power and voltage decibels.
Coax losses and approx capacity per 30cm
Coax voltage breakdown and capacity per foot
Single layer air cored inductance designer
Capacitor markings guide
SPARK GAP (NEW)
[PDA USERS]
I have successfully used these spreadsheets on the folowing devices:
Psion Revo
Nokia Communicator 9210i
The Revo does not support multiple workbooks in a single file so you are
advised to copy the Excel version 4 sheets to your Psion.
The Communicator can use multiple sheets in one file and it's best to copy
Excel 97 files instead to your Communicator.
The files in this package are:
RFCALC78.WK4 (Lotus 123) PC
RFCALC78.XLS (Excel 97 PC format)
RFCALC?.xls (Excel 4 - good for Win31 users - total 5 sheets in this
format) and recommended for Psion Revo users.
There is now no longer any requirement to supply seperate versions for the
aformentioned PDA's because I've now used a more generic method of cell
formulae so that the PsiWin or Nokia Data Suite wont moan about PC
specific
commands when copying/translating files from PC to PDA device.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ 73 - Andy ³
³ G0FTD ³
³ Whitstable, Kent ³
³ Winpack-AGW ³
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
³ ³ Û ³ ³
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