[chirp_users] KT-8900R

older
[chirp_users] Newly Released Radio...

Marc

13 Jul 2016 13 Jul '16

2:19 p.m.

I see that this radio is supported and would like to know if anyone has any experience with it?

Will CHIRP allow permanent modifications to the band edge limits, particularly 220, as the radio is shipped 240-260 MHz?

Will the radio operate with 220 in one VFO and 440 in the other?

Thanks,

Marc

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Larry Lovell

13 Jul 13 Jul

2:35 p.m.

My radio does not have 240 to 260 MHz. However, I have successfully programmed the radio using this software. It is very difficult to find the proper driver for the USB to radio cable. I used my basic computer which runs Windows 10. Many other programming software works better with my old Windows XP machine. The readout on the KT-8900 makes it difficult to make sure that all options were programmed properly. I have not used it to transmit yet for that reason. Instructions on the radio are still sketchy to me. But Windows 10 and the software does seem to work.

On Wed, Jul 13, 2016 at 3:19 PM, Marc via chirp_users < chirp_users@intrepid.danplanet.com> wrote:

...

I see that this radio is supported and would like to know if anyone has any experience with it?

Will CHIRP allow permanent modifications to the band edge limits, particularly 220, as the radio is shipped 240-260 MHz?

Will the radio operate with 220 in one VFO and 440 in the other?

Thanks,

Marc _______________________________________________ chirp_users mailing list chirp_users@intrepid.danplanet.com http://intrepid.danplanet.com/mailman/listinfo/chirp_users This message was sent to Larry Lovell at larry.lovell76@gmail.com To unsubscribe, send an email to chirp_users-unsubscribe@intrepid.danplanet.com

-- Larry Lovell 73's N7RGW Work: 208-557-4500 http://qrvtronics.com Home: 208-356-7749 http://mormon.org/me/4V53/LarryLovell/

Pavel Milanes (CO7WT)

15 Jul 15 Jul

8:06 a.m.

Hi Marc, My experience and test as the main developer of the driver for this radio in the interaction with other users:

1 - The band limits are encoded in a high mem area with READ ONLY attribute, any attempt to write to it and the radio will reset taking itself out of the cloning mode.

2 - One user managed to get it down (you will need pro equipment and soft skill to do that) and the reception was poor in 220 Mhz and the TX on the high setting results on a lot of heat and only 1 or 2 watts of output.

Aka: it's technically difficult mod it in software and the hardware part is not prepared to manage the 222 Mhz band with the power dissipated as heat and final blowing is a high change in this situation.

My advice: sold it and get a BTECH UV5001+220 instead.

73 Pavel CO7WT.

El 13/07/16 a las 17:19, Marc via chirp_users escribió:

...

I see that this radio is supported and would like to know if anyone has any experience with it?

Will CHIRP allow permanent modifications to the band edge limits, particularly 220, as the radio is shipped 240-260 MHz?

Will the radio operate with 220 in one VFO and 440 in the other?

Thanks,

Marc _______________________________________________ chirp_users mailing list chirp_users@intrepid.danplanet.com http://intrepid.danplanet.com/mailman/listinfo/chirp_users This message was sent to M.Sc. Pavel Milanes Costa at pavelmc@gmail.com To unsubscribe, send an email to chirp_users-unsubscribe@intrepid.danplanet.com .

-- 73 Pavel CO7WT.

Nigel Johnson

8:19 a.m.

I spoke to an engineer from one of the big three manufacturers at Dayton one year, and he told me that the reason 220 is often blocked in dual band radios is that it is difficult to filter out unwanted signals when bands are close together as 2m and 220MHz are. One of their radios could be 'opened up' to use 220, but the 1-2 watts that it apparently put out on 220 was actually going out out on other frequencies!

In other words, don't do it unless you want a heap of trouble.

73 de Nigel ve3id

-- Nigel Johnson MSc., MIEEE VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! http://nigel.homelinux.net http://va3mcu.ham-radio-op.net You can reach me by voice on Skype: TILBURY2591 If time travel ever will be possible, it already is. Ask me again yesterday This e-mail is not and cannot, by its nature, be confidential. En route from me to you, it will pass across the public Internet, easily readable by any number of system administrators along the way. Nigel Johnson nw.johnson@ieee.org Please consider the environment when deciding if you really need to print this message On 07/15/2016 11:06 AM, Pavel Milanes (CO7WT) wrote: > Hi Marc, > My experience and test as the main developer of the driver for this > radio in the interaction with other users: > > 1 - The band limits are encoded in a high mem area with READ ONLY > attribute, any attempt to write to it and the radio will reset taking > itself out of the cloning mode. > > 2 - One user managed to get it down (you will need pro equipment and > soft skill to do that) and the reception was poor in 220 Mhz and the TX > on the high setting results on a lot of heat and only 1 or 2 watts of > output. > > Aka: it's technically difficult mod it in software and the hardware part > is not prepared to manage the 222 Mhz band with the power dissipated as > heat and final blowing is a high change in this situation. > > My advice: sold it and get a BTECH UV5001+220 instead. > > 73 Pavel CO7WT. > > El 13/07/16 a las 17:19, Marc via chirp_users escribió: >> I see that this radio is supported and would like to know if anyone has any experience with it? >> >> Will CHIRP allow permanent modifications to the band edge limits, particularly 220, as the radio is shipped 240-260 MHz? >> >> Will the radio operate with 220 in one VFO and 440 in the other? >> >> Thanks, >> >> Marc >> _______________________________________________ >> chirp_users mailing list >> chirp_users@intrepid.danplanet.com >> http://intrepid.danplanet.com/mailman/listinfo/chirp_users >> This message was sent to M.Sc. Pavel Milanes Costa at pavelmc@gmail.com >> To unsubscribe, send an email to chirp_users-unsubscribe@intrepid.danplanet.com >> . >>

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Larry Lovell
Marc
Nigel Johnson
Pavel Milanes (CO7WT)