Q. What versions of the KU-893 software are available?
A. The following table shows existing KU-893 software versions, and the embedded (or firmware) versions they are compatible with:
v3.0 to v3.3.x
The embedded (or firmware version) is reported when you run a self test of the KU-893, the software version shows on the splash screen as the software starts, on the 'Help About' dialog box and as one of the results of a self test.
Note: Earlier versions of the software (3.4 to 3.x) will report v4 and v5 firmware as 4 and 5 respectively, while later version will report the same firmware as 1.4 and 1.5 respectively.
Q. Which versions of the KU-893 software are supported?
A. Currently versions prior to v3.0 (ie v2.1) are unsupported.
This generation of software was designed to operate in the Windows 3.x® and INTEL® xx486 environment.
Advances in PC hardware and operating systems have meant that this software is incompatible with both PENTIUM® processors - because of the speed and the NT® operating system - due to differences in the file naming and other factors.
An upgrade to the software requires a mandatory upgrade to the KU-893 firmware to suit.
in the first instance - contact us at:
Q. My AIRLITE® headset has no transmit audio when using a KY-900 mod 3. Why?
A. Current in-service AIRLITE® headsets have a replaceable microphone insert. Your problem may be because your headset is fitted with an ELECTRET REPLACEMENT CARBON MIC(P/N1164100) which requires a carbon energising voltage to work.
The KY-900 does not supply this voltage and was designed to accept only a dynamic microphone input.
If this is your problem then locate an AIRLITE® EM MICROPHONE 300 OHMS (P/N1160690) insert for your headset.
Q. How can I identify the Mod. status of my CYCOM® product?
A. All CYCOM® products have a numbered external modification (mod) plate.
Changes to the hardware status of a unit is indicated by 'striking out' the number associated with this change. An 'un-struck' number means that the associated modification is not done. In some instances, as with MOD 3 for the KY-900, it may not be applicable to that particular unit.
New equipment is manufactured at the latest modification level. With new equipment ONLY the LATEST MODIFICATION AT THE TIME OF MANUFACTURE is struck out. This signifies that ALL APPLICABLE MODIFICATIONS UP TO AND INCLUDING THE NUMBER STRUCK OFF ARE INCLUDED IN THE BUILD.
The software status of a unit is displayed on-screen during start-up and also in the 'About' file for systems that have a PC based user interface. Some rack mounted units, such as the KU-893, have a front panel sticker, in addition to the rear 'mod' plate, to indicate the version of hardware and firmware in use.
Questions regarding the mod status of CYCOM® products
should be directed to
and should include the unit serial number.
Q. Why has my CYCOM product stopped working after a software upgrade?
A. Only one version of CYCOM software should be installed on your computer at a time. Previous versions of CYCOM software should be removed before upgrading. To uninstall the previous version use your operating systems add/remove programs feature. To do this on Windows NT 4:
1. Click the start button on the Windows NT desktop
2. Select Settings>Control Panel
3. Double click the add/remove programs icon.
4. Select the software you wish to remove and click add/remove.
5. Follow the on-screen prompts.
Q. HOW DO I FIND THE T INDEX FILE FOR MY KU-893?
1. Go to the Ionospheric Prediction Services web site (http://www.ips.gov.au).
2. On the front page of their web site, select the HF Systems link.
3. On the HF Systems page, select the T Index link under the Global HF item.
4. Select the Monthly T Index link on the T Index page.
5. Select the link on the Monthly T Index page to view or download the latest Tindicies text file.
The web address for the T Index file is http://www.ips.gov.au/Category/HF Systems/Global HF/T Index/TIndices.txt.
Q. MY AS/KL-918 WILL NOT TRANSMIT MESAGES AND SHOWS 'TERMINAL BUSY' IN THE MESSAGE QUEUE
A. The AS/KL-918 has a PTT sense line which is only present in 5966-00-900-0016 radio cables. While standard 5966-00-900-0006 radio cables can be connected to the AS/KL-918 the missing sense line makes the terminal think that the radio PTT is in use by the handset and the terminal queues the message waiting for the 'operator' to release the PTT.
Do not use -0006 radio cables with the AS/KL-918.
A. The most common cause of this complaint is the input of normal receiver noise into the modem during the self test. During this test the data terminal transmits a 'canned' crypto message in fast and slow which it then receives and decrypts. If the received message is corrupted by receiver noise the BITE software assumes that the modem is faulty and displays the 'MODEM FAIL' response.
All instruction cards, and 'train the trainer' courses conducted by CRL mention this fact.
A. Unless marked CYCOM products with external power capability will operate between 9-30V DC. The current necessary must be determined from the associated instruction manual.
A. While operation on 12V is quite acceptable, as explained in the associated instruction manual for CYCOM printers, the MINIMUM CHARGE voltage is 18V DC. Normally 24V would be the most available source of power for this task. The internal battery pack is charged when the unit is switched ON.
A. Most CYCOM products are prohibited exports under Regulation 13E of the Australian Customs Act 1901. As a result export permits are required and potential customers must realise that these may not be granted by the Australian Government for a number of reasons. CRL will not export equipment to users who seek to circumvent these regulations either initially or as the result of refusal.
The sale of certain products within our product range are further restricted by international agreement to the Governments of Australia, New Zealand, Canada, the United Kingdom and the United States of America.
CRL does not seek sales through dealers or agents although we are prepared to work with respected and experienced local business interests to persue selected sales opportunities. Initially all requests for information should be made directly to the company.
A. The frog was first used in an early advertisment for CRL's frequency hopping radios and has since been used for desktop icons and CD covers. The model for the current frog picture lives in the staff toilets at CRL.