The Noise Floor: 1750 Meter and Medfer Resource
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WOLF OPERATING TIPS

The WOLF software currently operates in an MS-DOS command window, though it is actually a 32 Bit Windows program. It is necessary to use DOS-like commands called "options" in order to maximize the performance of the program. A user friendly interface is planned for the future, but for now, it may be helpful to print out this quick reference chart:

OPTION FUNCTION TYPICAL VALUES
-a Turns on "Test" mode. Allows the file of the signal to be mixed with a test file of noise. The amount of attenuation can be specified. 0 - 45db attenuation
-b Noise Blanker 4000 to 20,000
-e Causes files to be written in 8 bit format, which reduces file size, but may also affect dynamic range. No value range.
-f Specifies the center frequency of the output. Can be used to compensate for errors in your receiver or the transmitting stations frequency. WOLF uses 800hz has it's default center frequency. 790.000 - 810.000
-k Used to alter the output frequency when driving a XOR gate type transmitter. It can be easier to rectify a signal by changing this value. Any audio frequency possible. 3000hz suggested.
-1 Causes only the last frame processed to be used for detecting frequency and frame timing, rather than using the sum of all frames.Useful for weak signal detection. No value range.
-m Allows you to measure frequency and drift of an unmodulated carrier (NOT A WOLF SIGNAL) so that you can adjust the software to compensate.This option displays the frequency, phase angle, and power at the specified interval. 10 to 100 seconds 90 seconds suggested.
-n Allows WOLF to generate a binary file for programming EEPROM beacons No value range
-q Allows user to select a file for WOLF to read or to record. Default read file is wolfr.wav (Example, you can now save files as LEK1.wav and then ask WOLF to read it by using this option. -q file name.wav
-r Specifies the actual sample rate of the transmitting sound card. This may be needed for on-air transmitting, as the program expects the bit rates to match within a few PPM. WOLF wants this value to be 8000.00hz, you need to measure your sound card output and then adjust. Usually less than a hz. Needed for TX only.
-s Tells WOLF to skip a number of samples from the input file before processing. Allows you to narrow in on a part of the file that shows promise. Select the time (t:) frame that the program should begin processing with.
-t Tells WOLF to search a range of frequencies around 800hz to look for a received signal. Default value is 1.0hz. Larger values result in reduced sensitivity and take longer to process. 0.01 to 10.0 (Default is 1.0hz)
-w Slew option. Allows WOLF to compensate for small drift errors in your receiver over time. Values are expressed in hz per second. Values are always a fraction of a hz. .000030 - .000055 for example. You must measure your frequency drift using the -m option to determine the setting.
-x Tells WOLF to generate the "transmit" file Option is followed by the message in quotes. I.E. -x "DE XM XM XM"

© 2000 Les Rayburn, N1LF & Others.