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Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

qp2trz
 

No worries.
Glad to help.
PM me with the results.

Joey VA3GOC VE3XMU
Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

Scott MacGillivray, KM6RTE
 

Joey,

 

Thanks for the suggestion.  I now know how to change the radio’s deviation.

 

From: TMD700A@groups.io <TMD700A@groups.io> On Behalf Of qp2trz
Sent: Saturday, October 9, 2021 3:24 PM
To: TMD700A@groups.io
Subject: Re: [TMD700A] Adjusting Kenwood D700 Internal TNC for 9600 Baud

 

The D700 has a service mode you can access with the right set of launch codes.

Google is your friend. 73

 

Joey

VA3GOC VE3XMU
Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

David Ranch
 


Nice link John.. thanks for that little nugget.  Too bad it's gone off the primary website though.

--David
KI6ZHD


On 10/09/2021 05:44 PM, John Huggins wrote:
Let me add a resource from the wayback machine that may help...


On Sat, Oct 9, 2021 at 6:35 PM John Huggins <john.huggins.ee@...> wrote:
Not quite sure about the 700, but I suspect the deviation settings for it and the later 710 models are already optimized, deviation and sensitivity wise, quite well for 1200 and 9600.  These Kenwood's are well known for better 9600 than 1200 although both work out of the box.

Being optimized for APRS UI AX.25 use, the internal TNC may not have sufficient buffering for AX.25 connected mode.  Many folks who do use the 700/710s for connected mode do it with an external TNC that usually have no problem with any AX.25 mode of operation.

John, kx4o

On Sat, Oct 9, 2021 at 5:39 PM Scott MacGillivray, KM6RTE <csmacg45@...> wrote:

Greetings,

 

I recently set up a new dual band (VHF & UHF) Winlink RMS Packet gateway.  The UHF band uses a Kenwood D700 radio that is set to operate at 9600 baud.  A nice feature of this radio is that it has an internal TNC, which made the set up very easy.  I was able to fully check-out the system from my shop (utilizing short distance “test range”) and it operated fine, without any issues.  However, when it was installed at its final location (assessable to a large number of stations), I got reports from stations that they weren’t able to connect or have a successful session with it. 

 

In my limited research into this issue, I’ve found that operating at 9600 baud frequently requires that the TNC be “fine-tuned” (my words) to support this faster speed.  Other operators have informed me that I need to tweak the radio’s “deviation” (?).  I have access to an older model IFR FM/AM-1000S Communications Service Monitor (with unknown calibration) in order to evaluate the radio’s TNC performance. 

 

Can anyone provide me with any good resources or information on 1) how to setup the Service Monitor, 2) what performance parameters I need to be looking for, and 3) what are the TNC settings (and recommended values) for the D700 that need to be changed in order to optimize its performance?  I don’t have a strong RF/electronics background, so I suspect I need this explained simply. 

 

Thanks in advance for any assistance you can provide. 

 

Scott MacGillivray, KM6RTE

Orange, CA

 
Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

John Huggins
 

Let me add a resource from the wayback machine that may help...


On Sat, Oct 9, 2021 at 6:35 PM John Huggins <john.huggins.ee@...> wrote:
Not quite sure about the 700, but I suspect the deviation settings for it and the later 710 models are already optimized, deviation and sensitivity wise, quite well for 1200 and 9600.  These Kenwood's are well known for better 9600 than 1200 although both work out of the box.

Being optimized for APRS UI AX.25 use, the internal TNC may not have sufficient buffering for AX.25 connected mode.  Many folks who do use the 700/710s for connected mode do it with an external TNC that usually have no problem with any AX.25 mode of operation.

John, kx4o

On Sat, Oct 9, 2021 at 5:39 PM Scott MacGillivray, KM6RTE <csmacg45@...> wrote:

Greetings,

 

I recently set up a new dual band (VHF & UHF) Winlink RMS Packet gateway.  The UHF band uses a Kenwood D700 radio that is set to operate at 9600 baud.  A nice feature of this radio is that it has an internal TNC, which made the set up very easy.  I was able to fully check-out the system from my shop (utilizing short distance “test range”) and it operated fine, without any issues.  However, when it was installed at its final location (assessable to a large number of stations), I got reports from stations that they weren’t able to connect or have a successful session with it. 

 

In my limited research into this issue, I’ve found that operating at 9600 baud frequently requires that the TNC be “fine-tuned” (my words) to support this faster speed.  Other operators have informed me that I need to tweak the radio’s “deviation” (?).  I have access to an older model IFR FM/AM-1000S Communications Service Monitor (with unknown calibration) in order to evaluate the radio’s TNC performance. 

 

Can anyone provide me with any good resources or information on 1) how to setup the Service Monitor, 2) what performance parameters I need to be looking for, and 3) what are the TNC settings (and recommended values) for the D700 that need to be changed in order to optimize its performance?  I don’t have a strong RF/electronics background, so I suspect I need this explained simply. 

 

Thanks in advance for any assistance you can provide. 

 

Scott MacGillivray, KM6RTE

Orange, CA

 
Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

John Huggins
 

Not quite sure about the 700, but I suspect the deviation settings for it and the later 710 models are already optimized, deviation and sensitivity wise, quite well for 1200 and 9600.  These Kenwood's are well known for better 9600 than 1200 although both work out of the box.

Being optimized for APRS UI AX.25 use, the internal TNC may not have sufficient buffering for AX.25 connected mode.  Many folks who do use the 700/710s for connected mode do it with an external TNC that usually have no problem with any AX.25 mode of operation.

John, kx4o


On Sat, Oct 9, 2021 at 5:39 PM Scott MacGillivray, KM6RTE <csmacg45@...> wrote:

Greetings,

 

I recently set up a new dual band (VHF & UHF) Winlink RMS Packet gateway.  The UHF band uses a Kenwood D700 radio that is set to operate at 9600 baud.  A nice feature of this radio is that it has an internal TNC, which made the set up very easy.  I was able to fully check-out the system from my shop (utilizing short distance “test range”) and it operated fine, without any issues.  However, when it was installed at its final location (assessable to a large number of stations), I got reports from stations that they weren’t able to connect or have a successful session with it. 

 

In my limited research into this issue, I’ve found that operating at 9600 baud frequently requires that the TNC be “fine-tuned” (my words) to support this faster speed.  Other operators have informed me that I need to tweak the radio’s “deviation” (?).  I have access to an older model IFR FM/AM-1000S Communications Service Monitor (with unknown calibration) in order to evaluate the radio’s TNC performance. 

 

Can anyone provide me with any good resources or information on 1) how to setup the Service Monitor, 2) what performance parameters I need to be looking for, and 3) what are the TNC settings (and recommended values) for the D700 that need to be changed in order to optimize its performance?  I don’t have a strong RF/electronics background, so I suspect I need this explained simply. 

 

Thanks in advance for any assistance you can provide. 

 

Scott MacGillivray, KM6RTE

Orange, CA

 
Re: Adjusting Kenwood D700 Internal TNC for 9600 Baud

qp2trz
 

The D700 has a service mode you can access with the right set of launch codes.
Google is your friend. 73

Joey
VA3GOC VE3XMU
Adjusting Kenwood D700 Internal TNC for 9600 Baud

Scott MacGillivray, KM6RTE
 

Greetings,

 

I recently set up a new dual band (VHF & UHF) Winlink RMS Packet gateway.  The UHF band uses a Kenwood D700 radio that is set to operate at 9600 baud.  A nice feature of this radio is that it has an internal TNC, which made the set up very easy.  I was able to fully check-out the system from my shop (utilizing short distance “test range”) and it operated fine, without any issues.  However, when it was installed at its final location (assessable to a large number of stations), I got reports from stations that they weren’t able to connect or have a successful session with it. 

 

In my limited research into this issue, I’ve found that operating at 9600 baud frequently requires that the TNC be “fine-tuned” (my words) to support this faster speed.  Other operators have informed me that I need to tweak the radio’s “deviation” (?).  I have access to an older model IFR FM/AM-1000S Communications Service Monitor (with unknown calibration) in order to evaluate the radio’s TNC performance. 

 

Can anyone provide me with any good resources or information on 1) how to setup the Service Monitor, 2) what performance parameters I need to be looking for, and 3) what are the TNC settings (and recommended values) for the D700 that need to be changed in order to optimize its performance?  I don’t have a strong RF/electronics background, so I suspect I need this explained simply. 

 

Thanks in advance for any assistance you can provide. 

 

Scott MacGillivray, KM6RTE

Orange, CA

 
Re: TM-700 shows busy one side A (left display)

Camp
 

Thanks Ron, offer any setting that I might check? Other than the squelch control. Odd thing is the display shows busy but the bar graph doesn't have any level shown. I have hard reset and still have the same systoms.
Thanks
Gerald 
KJ4SVL
Re: TM-700 shows busy one side A (left display)

Ron Pariseau
 

Before you start any surgical activities, please make absolutely sure that all your settings are correct! Been there! Good luck 
Re: TM-700 shows busy one side A (left display)

qp2trz
 

I'm wondering if one of the legs of the squelch pot let go from the board.

Joey

VA3GOC VE3XMU
Re: TM-700 shows busy one side A (left display)

R. Patrick Ryan
 

I always make a copy to the old laptop of the TM-D700 settings and memory with the Kenwood software, and rename the file extension from *.700 to *.BAD or *.TXT just in case.

73 de Pat


R. Patrick Ryan
ARS: KC6VVT, ASEC/IL, OES/IL, Grid: EN51lf, 
email: kc6vvt@...
Facebook for ham related:  http://www.facebook.com/KC6VVT/info


Virus-free. www.avast.com


On Wed, Oct 6, 2021 at 9:59 PM Mark Wolff <N4MEW.Mark@...> wrote:
And excuse me if this had been tried and failed, but does this issue persist after a full CPU reset?

From my notes::

CPU RESET:

- MNU, RADIO 1-9-7

- Select (Partial) VFO / PM Reset / Full , select OK


73

MW / N4MEW


On Wed, Oct 6, 2021 at 6:23 PM Camp <gwmsr@...> wrote:
One side (left) display shows busy with no s-meter reading, squelch control has no effect on "white" noise, signal incoming works ok, tone setting works ok,, B side squelch works and receive properly.
Excuse me please if posted somewhere in the group, I was unable to find an issue like this.

Re: TM-700 shows busy one side A (left display)

Mark Wolff
 

And excuse me if this had been tried and failed, but does this issue persist after a full CPU reset?

From my notes::

CPU RESET:

- MNU, RADIO 1-9-7

- Select (Partial) VFO / PM Reset / Full , select OK


73

MW / N4MEW


On Wed, Oct 6, 2021 at 6:23 PM Camp <gwmsr@...> wrote:
One side (left) display shows busy with no s-meter reading, squelch control has no effect on "white" noise, signal incoming works ok, tone setting works ok,, B side squelch works and receive properly.
Excuse me please if posted somewhere in the group, I was unable to find an issue like this.

TM-700 shows busy one side A (left display)

Camp
 

One side (left) display shows busy with no s-meter reading, squelch control has no effect on "white" noise, signal incoming works ok, tone setting works ok,, B side squelch works and receive properly.
Excuse me please if posted somewhere in the group, I was unable to find an issue like this.
Re: TM-D700 fire up issue

Ron Pariseau
 

Sorry to hear you still have the problem! I'll  do some more thinking about this! 
Re: TM-D700 fire up issue

Gundolf
 
Edited

Hello Ron,
I thank you very much for your impressiv help. You saved my day. Nevertheless, the issue will not be solved by this. Something caused it and that has to be found.

73 de DF8FS, Gundolf
Re: Kenwood Discontinuing the TM-D710XX Line?

Larry J. Ford K4AEC
 

Best and most "on-point" response so far.  It's entirely possible that some parties who are posting the "discontinued" mantra have misinterpreted the lack of inventory as an official, permanent closing down of the line.

Larry J. Ford
K4AEC
 



------ Original Message ------
Received: 05:18 PM EDT, 09/17/2021
From: "Eric Green" <ki6wbx@...>
To: TMD700A@groups.io
Subject: Re: [TMD700A] Kenwood Discontinuing the TM-D710XX Line?


The inventory of ham radios from *all* vendors (other than the Chinese vendors, sigh) seems to be pretty much dried up due to the global chip shortage right now, forcing mass discontinuance of models (technically a model must be discontinued to prevent wholesalers or retailers from ordering it). Let's see what happens once the chips are available again to see whether JVCKenwood re-introduces the line, either in original or updated form.

On 9/17/2021 2:06 PM, Tom Schaefer NY4I wrote:
It is too bad as building on the DSTAR addition to the D74, if Kenwood came out with a mobile radio that was full duplex and had DSTAR and keeping all the other features of the D710, I would replace my IC5100 in a minute. 

The D700/D710 line was really the best mobile VHF/UHF rig I have owned mostly due to the well thought out interface and full duplex capability.

Tom
On Sep 17, 2021, at 4:19 PM, Larry J. Ford K4AEC <lford@...> wrote:

Another group I'm a member of (AT - Golden Packet), which has used the Kenwood TM-7XX line of radios to send APRS messages up and down the Appalachian Trail during an annual July event, has had several messages posted saying that Kenwood is ending production of the TM-710xx with no replacement in sight.

Can anyone on this list confirm (or deny) that "news?"  Thanks.

Larry J. Ford
K4AEC




Re: Kenwood Discontinuing the TM-D710XX Line?

Tom Schaefer NY4I
 

That’s a good point. I read yesterday that Mercedes was discontinuing all V8s in the US for model year 2022 due to supply issues but they will be back in 2023 so similar idea to not allow orders to be taken. 

I would think they could just state they have no quantity but technically that becomes a back order. But that is the limit of my supply chain knowledge. Plus it gets us a bit far afield of this group's topic.

I do hope we see a D720 in the future as basically the latest D710 with DSTAR added.

73,

Tom NY4I

On Sep 17, 2021, at 5:15 PM, Eric Green <ki6wbx@...> wrote:

The inventory of ham radios from *all* vendors (other than the Chinese vendors, sigh) seems to be pretty much dried up due to the global chip shortage right now, forcing mass discontinuance of models (technically a model must be discontinued to prevent wholesalers or retailers from ordering it). Let's see what happens once the chips are available again to see whether JVCKenwood re-introduces the line, either in original or updated form.

On 9/17/2021 2:06 PM, Tom Schaefer NY4I wrote:
It is too bad as building on the DSTAR addition to the D74, if Kenwood came out with a mobile radio that was full duplex and had DSTAR and keeping all the other features of the D710, I would replace my IC5100 in a minute. 

The D700/D710 line was really the best mobile VHF/UHF rig I have owned mostly due to the well thought out interface and full duplex capability.

Tom
On Sep 17, 2021, at 4:19 PM, Larry J. Ford K4AEC <lford@...> wrote:

Another group I'm a member of (AT - Golden Packet), which has used the Kenwood TM-7XX line of radios to send APRS messages up and down the Appalachian Trail during an annual July event, has had several messages posted saying that Kenwood is ending production of the TM-710xx with no replacement in sight.

Can anyone on this list confirm (or deny) that "news?"  Thanks.

Larry J. Ford
K4AEC


Re: Kenwood Discontinuing the TM-D710XX Line?

Eric Green
 

The inventory of ham radios from *all* vendors (other than the Chinese vendors, sigh) seems to be pretty much dried up due to the global chip shortage right now, forcing mass discontinuance of models (technically a model must be discontinued to prevent wholesalers or retailers from ordering it). Let's see what happens once the chips are available again to see whether JVCKenwood re-introduces the line, either in original or updated form.

On 9/17/2021 2:06 PM, Tom Schaefer NY4I wrote:
It is too bad as building on the DSTAR addition to the D74, if Kenwood came out with a mobile radio that was full duplex and had DSTAR and keeping all the other features of the D710, I would replace my IC5100 in a minute. 

The D700/D710 line was really the best mobile VHF/UHF rig I have owned mostly due to the well thought out interface and full duplex capability.

Tom
On Sep 17, 2021, at 4:19 PM, Larry J. Ford K4AEC <lford@...> wrote:

Another group I'm a member of (AT - Golden Packet), which has used the Kenwood TM-7XX line of radios to send APRS messages up and down the Appalachian Trail during an annual July event, has had several messages posted saying that Kenwood is ending production of the TM-710xx with no replacement in sight.

Can anyone on this list confirm (or deny) that "news?"  Thanks.

Larry J. Ford
K4AEC

Re: Kenwood Discontinuing the TM-D710XX Line?

Tom Schaefer NY4I
 

It is too bad as building on the DSTAR addition to the D74, if Kenwood came out with a mobile radio that was full duplex and had DSTAR and keeping all the other features of the D710, I would replace my IC5100 in a minute. 

The D700/D710 line was really the best mobile VHF/UHF rig I have owned mostly due to the well thought out interface and full duplex capability.

Tom

On Sep 17, 2021, at 4:19 PM, Larry J. Ford K4AEC <lford@...> wrote:

Another group I'm a member of (AT - Golden Packet), which has used the Kenwood TM-7XX line of radios to send APRS messages up and down the Appalachian Trail during an annual July event, has had several messages posted saying that Kenwood is ending production of the TM-710xx with no replacement in sight.

Can anyone on this list confirm (or deny) that "news?"  Thanks.

Larry J. Ford
K4AEC

Re: Kenwood Discontinuing the TM-D710XX Line?

pinoleronica
 

I am looking for one such radio TM-D710GA....Want to experiment with APRS / Packet....there seems to be none on the market / or new.

Rafael / NN3RP


________________________________________
De: TMD700A@groups.io <TMD700A@groups.io> en nombre de Larry J. Ford K4AEC <lford@usa.net>
Enviado: viernes, 17 de septiembre de 2021 04:19 p. m.
Para: TMD700A@groups.io
Asunto: [TMD700A] Kenwood Discontinuing the TM-D710XX Line?

Another group I'm a member of (AT - Golden Packet), which has used the Kenwood TM-7XX line of radios to send APRS messages up and down the Appalachian Trail during an annual July event, has had several messages posted saying that Kenwood is ending production of the TM-710xx with no replacement in sight.

Can anyone on this list confirm (or deny) that "news?" Thanks.

Larry J. Ford
K4AEC
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