Lyn,
That is very interesting. Maybe I have an issue that I do not
understand. It sounds like your setup is working as I would have
expected. I also have a 7300, so I will have to give that a try. I do
not usually use the 7300 with the KAT-500 and I am a little worried
about powering the KAT-500 from the 7300.
73,
Tom, KG3V
On 1/8/2020 4:49 PM, Lyn Norstad wrote:
Coming in late on this discussion ... but wanting to add my .02 worth.
I have a setup similar to Tom's, except I have the IC-7300. With that
unit, the KAT500 does, in fact, follow band changes on the 7300 with
the */FIRST /*TUNE request. It doesn't matter if I hit TUNE on the
KAT, the 7300 or in software (FT8).
The KPA is already on the correct band, as it DOES follow band changes
on the 7300.
Lyn, W0LEN
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Bob McGraw K4TAX
Sent: Thursday, December 26, 2019 12:19 PM
To: Tom KG3V
Cc: [email protected]
Subject: Re: [Elecraft] Using KAT-500 without BAND Information
Check the KAT500 utility to see which antennas are authorized and for
which bands. You will need to supply RF from the IC7600 in order for
the KAT 500 to know what to do.
If you have 2 antennas authorized for the same band that will confuse
the issue. Also selecting LastUsed may be an issue where band data is
not available.
Bob, K4TAX
Sent from my iPhone
> On Dec 26, 2019, at 10:58 AM, Tom KG3V <[email protected]> wrote:
>
> Don,
>
> Good to hear from you. You helped me many times with K2 questions in
the past. Thanks for that! Hope you are enjoying the Holiday Season.
>
> I actually meant the TUNE button on the IC-7600. You must have meant
on the KAT-500, since there is not a TUNE button on the KPA-500. It
does not seem to matter which TUNE button I press. I think you
confirmed that it is working as expected. Still a bit annoying. As
soon as the TUNE cycle starts, of course there is RF. I guess the
KAT-500 is not sensing frequency DURING the TUNE event. So, any time I
switch Bands, I may go through a "complete" Tune cycle with an antenna
for the wrong Band. Of course, that most likely will not complete with
a match. The second TUNE cycle always selects the desired antenna.
>
> I think I need to send the Band information from the IC-7600 to the
KAT-500. My other option will be to use only one antenna with the
KAT-500 during Contests. Is it safe to assume that if I send the Band
info, this would not happen and the first TUNE cycle would be with the
"correct" antenna?
>
> 73,
>
> Tom, KG3V
>
>
>
>> On 12/26/2019 11:15 AM, Don Wilhelm wrote:
>> Tom,
>>
>> If by "hit the TUNE button", you are referring to the TUNE button
on the KPA500, those results are completely understandable.
>>
>> Changing bands on your transceiver is not communicated to the
KAT500 yet - (it will only be communicated when you provide RF to the
KAT500).
>>
>> So the KAT500 will not switch bands and will attempt to tune on the
wrong antenna initially. Once the KAT500 senses RF, it will know that
the band is not correct and will switch to the proper antenna for the
band in use.
>>
>> In your second scenerio, you are providing RF to the KAT500 first
and it will behave properly, so use that sequence.
>>
>> You should not have any problems with the KPA500 if you have the
keying cable run correctly - from the transceiver to the KAT500 and
then from the KAT500 to the KPA500.
>> The KAT500 interrupts the keying line to the KPA500 so the tuning
is done only with the exciter power level.
>>
>> 73 and HNY,
>> Don W3FPR
>>
>>> On 12/26/2019 9:39 AM, Tom KG3V wrote:
>>> I am using a KAT-500 Tuner with an ICOM IC-7600. I am not
providing BAND data, which is in line with recommendations for
connecting this radio in the Elecraft manuals. The documents tell me
that RF Frequency-sensing overrides all other information. I have two
antennas enabled. ANT 1 is a vertical for 10-40 meters. ANT 2 is an 80
meter dipole. I only ENABLE ANT 2 for 80 meters and only ENABLE ANT 1
for all other Bands, in the KAT Config.
>>>
>>> If I change Bands and hit the Tune button, KAT-500 will not change
to the correct antenna Instead, it tries to Tune with the wrong
antenna. The second time I hit TUNE, it will go to the correct
antenna. If instead, I change Bands and hit the Key, the correct
antenna is selected. That is fine on CW, but not great for other
Modes. Is this a bug? I don't see how this could be desirable. I think
this would be especially bad if I have the KPA-500 powered-ON.
>>>
> --
> Get on the Air and make some noise
> Ham Blog at WWW.KG3V.COM
>
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