6.0 Miscellaneous

Miscellaneous, Oddities and pecularities of the CI-V system
Here you will find information relating to the CI-V interface, reported bugs and things about other manufacturers. I am very grateful for any information you can provide. Please email me, see 'Impressum' (Imprint) for contact details.

6.1 Optoelectronics Mini Scout Frequency Counter

The Optoelectronics Mini Scout is a frequency counter with a CI-V interface. CI-V adress is $94. On power-up it sends

$FE $FE $00 $94 $7F $FD
$FE $FE $00 $94 $01 $05 $FD

3 times. The command "$7F" is not documented in the original ICOM manuals. Maybe that's a proprietary extension of the command set by Optoelectronics. The second command sets the connected rig to FM mode. Thanks to Trevor for reporting this.

6.2 Optoelectronics Inc., Optocom command extensions

For their products Optoelectronics introduced a host of commands for proprietary use. Their website offers all technical documentation on these commands in downloadable PDF format. See Optoelectronics Inc., website (technical documents) for details.

6.3 A bug in 781 CI-V software?

Thanks to Mel, VE2DC reporting on Nov. 22 1999:

One oddity... some 781's, perhaps the earlier ones, when they send mode info, in wide filter mode, they do not send the data indicating the width data (contrary to documentation), so the packet is 1 byte short. This caused a lot of grief with DX4WIN which was expecting a longer byte string. -- Mel VE2DC

6.4 Optoelectronics Scout Frequency Counter programming issue

mdf at angoss dot com writes:

The OptoElectronics Scout counter spits out:

	FE FE 00 90 7F 02 FD
	FE FE 00 90 01 05 FD

whenever the unit's state is changed to something different than "NORMAL". Bummer: there appears to be no way to tell if the counter actually *is* in "NORMAL" mode. There is no command to ask it, and the unit doesn't say anything when you move it *into* "NORMAL" mode. Without such hints, it is a drag making software that doesn't seize up waiting for responses that will never come.

6.5 Subtle bug in IC-726?

On 14. Oct. 2003, Mel, VE2DC wrote again (thanks, Mel!):

Here's a caveat for anyone programming an Icom interface...

The 726 (and probably the 725) has a "peculiarity"... when switching to the mode CW with the semi-breakin enabled, the rig pulses momentarily into transmit mode...

This has an unfortunate consequence... if the mode in VFO A is CW and VFO B is SSB an you turn on split, the radio begins to continously oscillate between RX and TX... and has to be powered off to stop it.

Unfortunately, a number of popular logging programs do the following to set up a split spot... set VFO A, set Split, Set VFO B.

Unfortunately this triggers the "bug" when split is set before the modes are set up in the VFO's...

It is much safer to Set VFO A, Set VFO B, then set Split... this will never fail with any rig than I am aware of.


6.6 ACECO FC-3002

Recently I had the opportunity to test an ACECO FC-3002 mini counter, near field receiver. This counter has a CI-V interface which can be used as an output to nearly all Icom rigs. It is just an output and works such, that when a frequency is found it transmits the found frequency over the CI-V bus to any connected Icom radio.

When turned on the FC-3002 sends the "mode FM" command, switching a connected Icom to FM (narrow). The FC-3002 always uses the adress $58, which is used by Icom for the IC-706MkII-G.

To have the FC-3002 send the frequency information you have to put it in function/hold mode. Push function button once after switching the unit on. Now, the FC-3002 emits frequency information each time a steady signal is encountered. It uses 9600 baud as transmission speed (cannot be changed AFAIK).