Re: [Repeater-Builder] Kenwood TKR-850

[k7pfj]

Norm,.

Good to talk this evening and hope you get the repeater singing soon.



Mike Mullarkey K7PFJ
6886 Sage Ave
Firestone, CO 80504
303-736-9693
k7...@skybeam.com





On Mar 19, 2010, at 7:42 PM, k4gfd tds.net wrote:

> I looking for info on the Kenwood TKR-850 repeater will it tune to 444.9750 
> tx I have the rx tuned is there a mod any info will be help ful
> 
> -- 
> Norm Scholer k4...@tds.net
> 850-251-6430
> 

Re: [Repeater-Builder] Kenwood TKR-850

[NORM KNAPP]

The tkr-850 will work in the ham band and it will work quite well.
73

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Fri Mar 19 20:42:03 2010
Subject: [Repeater-Builder] Kenwood TKR-850

  

I looking for info on the Kenwood TKR-850 repeater will it tune to 444.9750 tx 
I have the rx tuned is there a mod any info will be help ful

-- 
Norm Scholer k4...@tds.net
850-251-6430

[Repeater-Builder] Kenwood TKR-850

[k4gfd tds.net]

I looking for info on the Kenwood TKR-850 repeater will it tune to 444.9750
tx I have the rx tuned is there a mod any info will be help ful

-- 
Norm Scholer k4...@tds.net
850-251-6430

[Repeater-Builder] Kenwood TKR-850 Trade for Motorola XPR8300 MOTOTRBO

[k7pfj]

Any of you guys out there wanting to trade a Kenwood TKR-850 with controller
for a Motorola XPR8300 UHF MotoTRBO repeater.

 

 

 

Mike

 

 

Mike Mullarkey K7PFJ

6886 Sage Ave

Firestone, Co 80504

303-736-9693 Office

303-954-9693 Fax

303-718-8052 Cellular

 

[Repeater-Builder] Kenwood TKR-850 UHF Repeater System for Sale

[Anthony Mikulastik]

I have a Kenwood TKR-850 UHF Repeater System that is currently in use that will 
be available for sale in a few days.  It has a set of full size DB Products 
duplexers which fit in a 19 inch rack as does the repeater.  The repeater 
system has been in service for 5 years with no down time.  Programming cable 
and software is also available.  This is a current production uhf repeater 
system which will work in GMRS, Amateur, and Business bands.  The repeater is 
currently in Amateur operation but can be easily retuned by any 2-way shop to 
your frequency or I can get it tuned to your frequency at our local shop.

Plug and play system with switching power supply shipped in Continental US is 
$1350.   Add $50 if I have the local shop program and tune duplexers.  Call 
Anthony at 254-493-8595.

Re: [Repeater-Builder] Kenwood TKR-850 question

[wd8chl]

Nate Duehr wrote:
> On Jan 28, 2009, at 10:06 PM, Eric Lemmon wrote:
> 
>> If the Motorola radios are Professional Series (HT1250, CDM1550,  
>> etc.) you
>> can go into CPS and select "Non Standard Reverse Burst" on the  
>> Advanced tab.
>> This will program the radio to encode and decode in the 180 degree  
>> format,
>> on a channel-by-channel basis.  Kenwood will provide a firmware  
>> upgrade to
>> accomplish the same thing- but for a fee, of course, and you must  
>> send the
>> radio back to the depot to have this done.
> 
> "Non-standard."  Tee Hee.  Cute, Motorola.
> 
> Snuck a little Marketing into their programming software, did they?  :-)
> 
> Nate WY0X
> 
> 

Yeah-especially since the 120 degree shift is the 'non-standard' shift.

Re: [Repeater-Builder] Kenwood TKR-850 question

[Alan Rabin]

Thanks to all that replied. Yes it does need to be a modified file by Kenwood 
and sent to me. This is a great group. Really appreciate your help!

Best Regards,

Alan
  - Original Message - 
  From: NORM KNAPP 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, January 28, 2009 9:28 PM
  Subject: Re: [Repeater-Builder] Kenwood TKR-850 question


  The squelch tail problem with motorola portables on the tk-850 repeaters. 
Something to do with the reverse burst timing or something. We sold three new 
'850's to a customer and suddenly all the motorola portables started having a 
squelch tail at the end of their transmits. 

  - Original Message - 
  From: Repeater-Builder@yahoogroups.com  
  To: Repeater-Builder@yahoogroups.com  
  Sent: Wed Jan 28 19:55:02 2009 
  Subject: RE: [Repeater-Builder] Kenwood TKR-850 question 

  What did they fix? 

  Just curious. 

  Nate 

  -Original Message- 
  From: Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com> 
[mailto:Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of NORM KNAPP 
  Sent: Wednesday, January 28, 2009 5:26 PM 
  To: Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com> 
  Subject: Re: [Repeater-Builder] Kenwood TKR-850 question 

  Yes. Kenwood has a firmware fix for this. No big deal at all. 






   

Re: [Repeater-Builder] Kenwood TKR-850 question

[Nate Duehr]

On Jan 28, 2009, at 10:06 PM, Eric Lemmon wrote:

> If the Motorola radios are Professional Series (HT1250, CDM1550,  
> etc.) you
> can go into CPS and select "Non Standard Reverse Burst" on the  
> Advanced tab.
> This will program the radio to encode and decode in the 180 degree  
> format,
> on a channel-by-channel basis.  Kenwood will provide a firmware  
> upgrade to
> accomplish the same thing- but for a fee, of course, and you must  
> send the
> radio back to the depot to have this done.

"Non-standard."  Tee Hee.  Cute, Motorola.

Snuck a little Marketing into their programming software, did they?  :-)

Nate WY0X

Re: [Repeater-Builder] Kenwood TKR-850 question

[Nate Duehr]

On Jan 27, 2009, at 8:28 PM, Yahoo wrote:

> The problem is reverse phasing 120 degrees (Motorola) vs. 180 degrees
> (mostly everyone else).
>
> Jeff

Ah, yeah... that old tired problem.

You'd think they'd pay attention and just put BOTH options in the menu  
in the software these days...

Darn, I thought it might be something INTERESTING.

You're bummin' me out here, Jeff!  Heh heh...

Can always just switch to DCS and avoid that silliness altogether, I  
guess...

Nate WY0X

RE: [Repeater-Builder] Kenwood TKR-850 question

[Eric Lemmon]

If the Motorola radios are Professional Series (HT1250, CDM1550, etc.) you
can go into CPS and select "Non Standard Reverse Burst" on the Advanced tab.
This will program the radio to encode and decode in the 180 degree format,
on a channel-by-channel basis.  Kenwood will provide a firmware upgrade to
accomplish the same thing- but for a fee, of course, and you must send the
radio back to the depot to have this done.

I use my personal Motorola HT1250 radio when working with my local police
department, which has a Kenwood TKR-840 repeater, and I can also communicate
with the County Sheriff Office, which has a Motorola Quantar repeater.
Because of the unique capability to select the reverse burst phasing, my
radio mutes silently on either radio channel.

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Yahoo
Sent: Tuesday, January 27, 2009 7:28 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Kenwood TKR-850 question

The problem is reverse phasing 120 degrees (Motorola) vs. 180 degrees
(mostly everyone else).

Jeff

-Original Message-
From: Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> 
[mailto:Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of NORM KNAPP
Sent: Wednesday, January 28, 2009 6:28 PM
To: Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> 
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

The squelch tail problem with motorola portables on the tk-850 repeaters.
Something to do with the reverse burst timing or something. We sold three
new '850's to a customer and suddenly all the motorola portables started
having a squelch tail at the end of their transmits.

- Original Message -
From: Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com>
mailto:Repeater-Builder%40yahoogroups.com> >
To: Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com>
mailto:Repeater-Builder%40yahoogroups.com> >
Sent: Wed Jan 28 19:55:02 2009
Subject: RE: [Repeater-Builder] Kenwood TKR-850 question

What did they fix?

Just curious.

Nate 



 

RE: [Repeater-Builder] Kenwood TKR-850 question

[Yahoo]

The problem is reverse phasing 120 degrees (Motorola) vs. 180 degrees
(mostly everyone else).

Jeff

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of NORM KNAPP
Sent: Wednesday, January 28, 2009 6:28 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

The squelch tail problem with motorola portables on the tk-850 repeaters.
Something to do with the reverse burst timing or something. We sold three
new '850's to a customer and suddenly all the motorola portables started
having a squelch tail at the end of their transmits.

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Wed Jan 28 19:55:02 2009
Subject: RE: [Repeater-Builder] Kenwood TKR-850 question

What did they fix?

Just curious.

Nate 

RE: [Repeater-Builder] Kenwood TKR-850 question

[Mike Mullarkey]

I am sure you can get the firmware for the reverse burst mod. I have it but
you need to get a customization report before it can be released.

 

Mike

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of NORM KNAPP
Sent: Wednesday, January 28, 2009 7:28 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

 

The squelch tail problem with motorola portables on the tk-850 repeaters.
Something to do with the reverse burst timing or something. We sold three
new '850's to a customer and suddenly all the motorola portables started
having a squelch tail at the end of their transmits.

- Original Message -
From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com>
To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com>
Sent: Wed Jan 28 19:55:02 2009
Subject: RE: [Repeater-Builder] Kenwood TKR-850 question

What did they fix?

Just curious.

Nate 

-Original Message-
From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com>
[mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of
NORM KNAPP
Sent: Wednesday, January 28, 2009 5:26 PM
To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> 
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

Yes. Kenwood has a firmware fix for this. No big deal at all.





 

Re: [Repeater-Builder] Kenwood TKR-850 question

[NORM KNAPP]

The squelch tail problem with motorola portables on the tk-850 repeaters. 
Something to do with the reverse burst timing or something. We sold three new 
'850's to a customer and suddenly all the motorola portables started having a 
squelch tail at the end of their transmits.

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Wed Jan 28 19:55:02 2009
Subject: RE: [Repeater-Builder] Kenwood TKR-850 question

What did they fix?

Just curious.

Nate 

-Original Message-
From: Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com>  
[mailto:Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of NORM KNAPP
Sent: Wednesday, January 28, 2009 5:26 PM
To: Repeater-Builder@yahoogroups.com 
<mailto:Repeater-Builder%40yahoogroups.com> 
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

Yes. Kenwood has a firmware fix for this. No big deal at all.



 

RE: [Repeater-Builder] Kenwood TKR-850 question

[Nate Duehr]

What did they fix?

Just curious.

Nate 

-Original Message-
From: Repeater-Builder@yahoogroups.com 
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of NORM KNAPP
Sent: Wednesday, January 28, 2009 5:26 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 question

Yes. Kenwood has a firmware fix for this. No big deal at all.

Re: [Repeater-Builder] Kenwood TKR-850 question

[NORM KNAPP]

Yes. Kenwood has a firmware fix for this. No big deal at all.

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Wed Jan 28 18:01:14 2009
Subject: [Repeater-Builder] Kenwood TKR-850 question

 
 
Anyone ever have a squelch tail issue with the Kenwood TKR-850 when used with a 
Motorola CP-200 or CT-250 portables? I tried several reverse burst combinations 
at the repeater but have not been able to eliminate the squelch tail on the 
portables. I can program the portables if need be.
 
Thanks!!
 
Alan
wa...@earthlink.net <mailto:wa...@earthlink.net> 
EarthLink Revolves Around You.
 

 

[Repeater-Builder] Kenwood TKR-850 question

[wa...@earthlink.net]

Anyone ever have a squelch tail issue with the Kenwood TKR-850 when used with a 
Motorola CP-200 or CT-250 portables? I tried several reverse burst combinations 
at the repeater but have not been able to eliminate the squelch tail on the 
portables. I can program the portables if need be.

Thanks!!

Alan
wa...@earthlink.net
EarthLink Revolves Around You.

[Repeater-Builder] Kenwood tkr-850 and tkr-750

[John Transue]

TKR-850 experts,

To save a trip out to the repeater site, could you answer the following
question for me? Thanks.

On the TKR-850, by default one of the PF (programmable function) keys is
set to "repeat disable/enable". I am using the 850 as a full time
repeater. If that PF key is pushed, does the repeater become just a
transceiver? If so, I might re-program it to "none" so that the repeat
function doesn't get turned off by accident. Your thoughts?

Also, do you know a way to have the squelch level set from the front
panel?

John


>-Original Message-
>From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
>buil...@yahoogroups.com] On Behalf Of Ken Arck
>Sent: Thursday, January 15, 2009 1:32 PM
>To: Repeater-Builder@yahoogroups.com
>Subject: Re: [Repeater-Builder] Re: PL (CTCSS actually) Encode on
>Kenwood tkr-850 and tkr-750
>
No need. Now that I think about this a bit, if you're using the
>internal controller in the TKR, you could program an Aux In/Out to be
>COR Active Low and also program another Aux In/Out to be QT/DQT Enc
>Enable and then jumper the two on the DB25. This will make encoded
>tone track COS
>
>Ken
>-
>-
>President and CTO - Arcom Communications
>Makers of repeater controllers and accessories.
>http://www.arcomcontrollers.com/


>This message was checked by NOD32 antivirus system.
>http://www.eset.com

RE: [Repeater-Builder] Kenwood TKR-850 Driver FET Wanted

[Mike Mullarkey]

Jim,

 

Is this repeater and version 1 or a version 2 repeater. The version 1 would
be covered under a factory repair possibly.

 

 

 

Mike Mullarkey (K7PFJ)

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Cicirello
Sent: Friday, October 19, 2007 1:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Kenwood TKR-850 Driver FET Wanted

 

I am looking for a Driver FET, Q4, Part # PD55008S FOR A Kenwood
TKR-850 UHF.
If anyone has one in stock or can point me in the right direction,
please contact me at [EMAIL PROTECTED] <mailto:ka2ajh%40gmail.com> com. The
number shown on the parts
list doesn't come up on their website.
73 Jim KA2AJH



 

[Repeater-Builder] Kenwood TKR-850 Driver FET Wanted

[Jim Cicirello]

I am looking for a Driver FET, Q4, Part # PD55008S FOR A Kenwood
TKR-850 UHF.
If anyone has one in stock or can point me in the right direction,
please contact me at [EMAIL PROTECTED] The number shown on the parts
list doesn't come up on their website.
73 Jim KA2AJH
  

[Repeater-Builder] Kenwood TKR-850 UHF Repeater with DB Products Full Size Duplexors For Sale

[Anthony Mikulastik]

I have decided to sell my Kenwood TKR-850 UHF Repeater with DB Products 
Full Size Duplexors.  It is on the air in Temple, TX on 444.500 123.0 
tone.  The package comes with programing cable and software.  I am 
asking $1650 for the complete repeater syaytem.  The repeater is type 
approved for commercial and GMRS if not used for amateur.  Call Anthony 
at 254-493-8595.

[Repeater-Builder] Kenwood TKR 850

[wa9ba]

>>
One final question...I didn't think to ask the tech...will my
current software work with the upgrade or will I need to upgrade it
as well?

Kenwood hasn't changed the software as far as I know since it was 
written, it will work fine.

We Bought a TKR 750, we had it for 5 or 6 years and it worked 
flawlessly so when it came time for a UHF repeater, it was a no 
brainer on what to buy. We bought both of them from member of this 
list server. About a year ago, the 850 didn't seem to be working 
right so a couple of us went to the repeater site. When I checked 
the power out from the TX to a dummy load, we had only 7 watts out, 
I thought something was wrong with my Bird so I checked with another 
watt meter, it was about the same. We contaced our local Kenwood 
dealer and they replaced the PA with the update, no charge, It now 
runs 25 watts out, they said we could run it a little higher, maybe 
30 watts but we chose to keep it at 25. 
If I remember correctly, when you program it for a repeater with the 
software, it automaticly sets the power at 25 watts, if you set it 
up as a base radio, 40 watts, but this is just from memory.
I have the service bullitens on the PA update, if anyone wants it, I 
can email it to them, it is 4 pages.
Bill WA9BA







 
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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Ken Arck]

At 07:08 PM 4/19/2005 -0700, you wrote:

>You can run it at a higher power but NOT 100% duty cycle.

<---At least Kenwood doesn't spec it as such :-) But you're right. While
they appear to be quite happy at the high power setting - even with hours
of continuous keydown - it isn't recommended.

Ken
--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
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<*> To visit your group on the web, go to:
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<*> To unsubscribe from this group, send an email to:
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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Mike Mullarkey]

Ken,

You can run it at a higher power but NOT 100% duty cycle.

Oregon Repeater Linking Group
Mike Mullarkey
6539 E Street
Springfield, OR 97478
[EMAIL PROTECTED]
www.orlg.org
 
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck
Sent: Tuesday, April 19, 2005 5:37 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 repeater questions


At 09:25 AM 4/19/2005 -0400, you wrote:

>Bottom line: Kenwood says not to run it at more then 25W in repeater 
>service. Period.

<---Sorry Jim but that isn't what Kenwood says. They spec the TKR's at 100%
duty cycle @ 25 watts but they also plainly spec the 850 of being capable
of 40 watts at other than 100% duty cycle (I can quote from the service
manual if that helps)

That his 850 wouldn't make more than 27 watts, even when programmed for hi
power, indicates something is out of whack.

Ken 

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
Yahoo! Groups Links



 







 
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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Paul Finch]

Hello,

If it has the "New Improved" PA deck and he is below 450 MHz using one of
the 450 to 470 MHz split radios is the problem.  You can tell the new PA
deck from the old by the Q-4 driver transistor.  The old style was not
screwed into the casting, It's a surface mount looking thing.  The new
driver is screwed to the casting and they also have copper colored "springs"
over the top of both the driver and final transistors.

I just did 5 of these updates to my TKR-850's and tested them all on 442.15,
none made rated power there but did above 450 MHz.  To prove this he can
always program the radio to a higher frequency and check it there.

Paul
WB5IDM



-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Ken Arck
Sent: Tuesday, April 19, 2005 8:37 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 repeater questions



At 09:25 AM 4/19/2005 -0400, you wrote:

>Bottom line: Kenwood says not to run it at more then 25W in repeater
>service. Period.

<---Sorry Jim but that isn't what Kenwood says. They spec the TKR's at 100%
duty cycle @ 25 watts but they also plainly spec the 850 of being capable
of 40 watts at other than 100% duty cycle (I can quote from the service
manual if that helps)

That his 850 wouldn't make more than 27 watts, even when programmed for hi
power, indicates something is out of whack.

Ken

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net





Yahoo! Groups Links















 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> To unsubscribe from this group, send an email to:
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<*> Your use of Yahoo! Groups is subject to:
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Ken Arck]

At 09:25 AM 4/19/2005 -0400, you wrote:

>Bottom line: Kenwood says not to run it at more then 25W in repeater 
>service. Period.

<---Sorry Jim but that isn't what Kenwood says. They spec the TKR's at 100%
duty cycle @ 25 watts but they also plainly spec the 850 of being capable
of 40 watts at other than 100% duty cycle (I can quote from the service
manual if that helps)

That his 850 wouldn't make more than 27 watts, even when programmed for hi
power, indicates something is out of whack.

Ken 
--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> To unsubscribe from this group, send an email to:
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Jim B.]

Ken Arck wrote:
> At 04:14 PM 4/18/2005 -0400, you wrote:
> 
>>Those repeaters are rated for 25 W for continuous duty repeater service, 
>>so it is making rated power. In any case, I wouldn't run it beyond what 
>>your getting.
> 
> 
> <---Not true. TKR-850's should make at least 40 watts when programmed for
> high power.

I have the spec sheet for the 750/850 from the Kenwood dealer site. It 
says in a couple of places that it is rated for 15-25W in 100% cont. 
duty repeater service. It's too big to attach to this email, and I don't 
see the option for uploading into the files area for this group. If 
anyone wants it, I can email direct I guess, it's about 633K. (651,264 
bytes, give or take)

Bottom line: Kenwood says not to run it at more then 25W in repeater 
service. Period.

-- 
Jim Barbour
WD8CHL





 
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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Paul Finch]

Hello Again,

By the way, any TKR-850 repeater that you have that has the old style PA
deck is destined to burn up apparently since Kenwood will replace any old
deck you have for a penny.  You have to go through a Kenwood dealer, matter
of fact Kenwood will pay the dealer $82.00 in repair labor.  Mine were out
of warranty by two years and the still replaced them, charged me 5 cents.

Paul
WB5IDM


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Gary Laforce
Sent: Monday, April 18, 2005 4:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Kenwood TKR-850 repeater questions



Have you gone thru the softpot tuning in the software under the tabs
programming and then test mode. These are normaly 3 point adjustments so
you will have low med and hi freq adjustment plus a test tab. I would
not turn the repeater down to 5 watts there were problems with the x50
repeaters with the PA's and running low power it was burning up the
transistor and the PCB around them (look back in the archives of this
group I thank you will find what I'm talking about). As far as rated
power goes they are a 40 watt 50% duty repeater or a 25 watt 100%
repeater this is Kenwood spec. If you are not getting 40 watts something
is wrong. Don't listen to people when they tell you that it's only a 25
watt repeater that is WRONG. Good luck BTW they do work very well in the
Ham band.


Gary LaForce
Chariton Valley TriStar Communications
Kenwood LMR Sales and Service for 30+ years
Columbia Service Department Supervisor
573.441.2224 Direct Shop line
573.442.1147 Main Business Line
573.449.8310 Shop Fax line
[EMAIL PROTECTED]


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck
Sent: Monday, April 18, 2005 2:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 repeater questions


At 04:14 PM 4/18/2005 -0400, you wrote:
>
>Those repeaters are rated for 25 W for continuous duty repeater
service,
>so it is making rated power. In any case, I wouldn't run it beyond what

>your getting.

<---Not true. TKR-850's should make at least 40 watts when programmed
for
high power.


>> Question 3...The CW ID turns itself on every "X" minutes regardless
>> of how I set it in the software...am I missing something?  I don't
>> want it to ID unless there is activity on the repeater.

<---Can't be done using the internal controller. Commercial repeaters ID
whethere they're active or not.

>> Question 4...to float charge a battery, the service manual refers
>> to "shorting the charge land near R61".  Is this the 2 little traces
>> on the board?  Should I just solder a jumper across these 2 little
>> pads?

<---Yes, that's correct.

>> Question 5...anyone have any experience using these units in the 440
>> MHz range?  I plan to use it in the 460 MHz range, but I was
curious.>
>I know of one right now on the low end of 442 Mhz-runs just fine.

<---We have many running in the ham bands. A slight retune and away you
go!


>> Question 6...I bought the repeater used so if I can't get the power
>> up to the factory specs, would I be ok to turn the power down to say
>> 5 watts or so and run an external amp or would I be better off
>> putting in a 3 or 6 db pad between an external amp and the RF out
>> from the repeater?  I really want the repeater to work up to spec.

<--I think you should look into why it won't make 40 watts when
programmed
for high power (assuming the usual suspects, such as SWR and a
'non-flakey'
cable/connector/power meter isn't the culprit).

Ken

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net





Yahoo! Groups Links












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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Paul Finch]

Hello,

I was going to answer this post later but better do it now.  I just upgraded
5 TKR-850's to the "New Improved" PA deck, I was using one on my 442.15
repeater when it blew (fried charcoal) the driver Q-4.  Only one problem,
they don't like to work as good as the old PA below 450 MHz.  These new PA
decks don't put out the rated power and are not as broad-banded as the old
ones.  At 450 and below the transistor gets very hot very fast telling me
the transistor is having problems at that frequency.  I have some high
voltage 2 to 9 pF variable capacitors that I may try in strategic places on
the final, bet they will make rated power then.  That's the problem with the
broadband devices, sometimes that aren't.  One step forward, two (sometimes
three) steps back.

I am not going to be using these repeaters below 450 MHz any longer but I
want to see if I can make them work below 450 before I put them back on the
commercial frequencies.

Paul
WB5IDM



-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Ken Arck
Sent: Monday, April 18, 2005 3:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 repeater questions



At 04:14 PM 4/18/2005 -0400, you wrote:
>
>Those repeaters are rated for 25 W for continuous duty repeater service,
>so it is making rated power. In any case, I wouldn't run it beyond what
>your getting.

<---Not true. TKR-850's should make at least 40 watts when programmed for
high power.


>> Question 3...The CW ID turns itself on every "X" minutes regardless
>> of how I set it in the software...am I missing something?  I don't
>> want it to ID unless there is activity on the repeater.

<---Can't be done using the internal controller. Commercial repeaters ID
whethere they're active or not.

>> Question 4...to float charge a battery, the service manual refers
>> to "shorting the charge land near R61".  Is this the 2 little traces
>> on the board?  Should I just solder a jumper across these 2 little
>> pads?

<---Yes, that's correct.

>> Question 5...anyone have any experience using these units in the 440
>> MHz range?  I plan to use it in the 460 MHz range, but I was curious.>
>I know of one right now on the low end of 442 Mhz-runs just fine.

<---We have many running in the ham bands. A slight retune and away you go!


>> Question 6...I bought the repeater used so if I can't get the power
>> up to the factory specs, would I be ok to turn the power down to say
>> 5 watts or so and run an external amp or would I be better off
>> putting in a 3 or 6 db pad between an external amp and the RF out
>> from the repeater?  I really want the repeater to work up to spec.

<--I think you should look into why it won't make 40 watts when programmed
for high power (assuming the usual suspects, such as SWR and a 'non-flakey'
cable/connector/power meter isn't the culprit).

Ken

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net





Yahoo! Groups Links















 
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Glenn Little WB4UIV]

What does the radio look like on the spectrum analyzer??

73
Glenn
WB4UIV

At 03:12 PM 04/18/05, you wrote:


>Howdy all
>
>I finally have gotten around to setting up my TKR-850 UHF repeater.
>A few questions.
>
>I know that power is set up in software, however, I can't get but
>about 27 watts max out with the software set at max even on the test
>channels using LDF1 hardline, bird meter, and dummy load.  Any
>ideas?  I know there is a power adjustment, point VR1 on the PA
>board, but I can't for the life of me get it to do anything...do I
>need a special tool or something?  I can't get it to move.  Would
>this possibly be the problem or something else?
>
>Question 2...Initially, the power out was fluctuating
>wildly...jumping back and forth.  I tightened up the screws on the
>power transister and all the screws on the board and it seems to
>have stabilized.  Is there any thing else I should check to verify?
>
>Question 3...The CW ID turns itself on every "X" minutes regardless
>of how I set it in the software...am I missing something?  I don't
>want it to ID unless there is activity on the repeater.
>
>Question 4...to float charge a battery, the service manual refers
>to "shorting the charge land near R61".  Is this the 2 little traces
>on the board?  Should I just solder a jumper across these 2 little
>pads?
>
>Question 5...anyone have any experience using these units in the 440
>MHz range?  I plan to use it in the 460 MHz range, but I was curious.
>
>Question 6...I bought the repeater used so if I can't get the power
>up to the factory specs, would I be ok to turn the power down to say
>5 watts or so and run an external amp or would I be better off
>putting in a 3 or 6 db pad between an external amp and the RF out
>from the repeater?  I really want the repeater to work up to spec.
>
>Sorry for all the questions, but I'm new to Kenwood stuff and I'm
>trying to learn.
>
>Thank you
>Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892
>
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>






 
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Russ Stafford]

A few questions back.
Is it a TKR-850 or TKR-850 ver. two?
What Freq. range is it in? Not what you have the software having it tune 
tune but what freq. did it come from the dealer or factory on?
What software are you useing.
Yes I have used them on 440 and 460.

73 Russ, W3CH.

- Original Message - 
From: "rtoplus" <[EMAIL PROTECTED]>
To: 
Sent: Monday, April 18, 2005 3:12 PM
Subject: [Repeater-Builder] Kenwood TKR-850 repeater questions


>
>
> Howdy all
>
> I finally have gotten around to setting up my TKR-850 UHF repeater.
> A few questions.
>
> I know that power is set up in software, however, I can't get but
> about 27 watts max out with the software set at max even on the test
> channels using LDF1 hardline, bird meter, and dummy load.  Any
> ideas?  I know there is a power adjustment, point VR1 on the PA
> board, but I can't for the life of me get it to do anything...do I
> need a special tool or something?  I can't get it to move.  Would
> this possibly be the problem or something else?
>
> Question 2...Initially, the power out was fluctuating
> wildly...jumping back and forth.  I tightened up the screws on the
> power transister and all the screws on the board and it seems to
> have stabilized.  Is there any thing else I should check to verify?
>
> Question 3...The CW ID turns itself on every "X" minutes regardless
> of how I set it in the software...am I missing something?  I don't
> want it to ID unless there is activity on the repeater.
>
> Question 4...to float charge a battery, the service manual refers
> to "shorting the charge land near R61".  Is this the 2 little traces
> on the board?  Should I just solder a jumper across these 2 little
> pads?
>
> Question 5...anyone have any experience using these units in the 440
> MHz range?  I plan to use it in the 460 MHz range, but I was curious.
>
> Question 6...I bought the repeater used so if I can't get the power
> up to the factory specs, would I be ok to turn the power down to say
> 5 watts or so and run an external amp or would I be better off
> putting in a 3 or 6 db pad between an external amp and the RF out
> from the repeater?  I really want the repeater to work up to spec.
>
> Sorry for all the questions, but I'm new to Kenwood stuff and I'm
> trying to learn.
>
> Thank you
> Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.308 / Virus Database: 266.9.15 - Release Date: 4/16/2005
>
> 








 
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RE: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Gary Laforce]

Have you gone thru the softpot tuning in the software under the tabs
programming and then test mode. These are normaly 3 point adjustments so
you will have low med and hi freq adjustment plus a test tab. I would
not turn the repeater down to 5 watts there were problems with the x50
repeaters with the PA's and running low power it was burning up the
transistor and the PCB around them (look back in the archives of this
group I thank you will find what I'm talking about). As far as rated
power goes they are a 40 watt 50% duty repeater or a 25 watt 100%
repeater this is Kenwood spec. If you are not getting 40 watts something
is wrong. Don't listen to people when they tell you that it's only a 25
watt repeater that is WRONG. Good luck BTW they do work very well in the
Ham band.


Gary LaForce
Chariton Valley TriStar Communications
Kenwood LMR Sales and Service for 30+ years
Columbia Service Department Supervisor
573.441.2224 Direct Shop line
573.442.1147 Main Business Line
573.449.8310 Shop Fax line
[EMAIL PROTECTED]


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Arck
Sent: Monday, April 18, 2005 2:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Kenwood TKR-850 repeater questions


At 04:14 PM 4/18/2005 -0400, you wrote:
>
>Those repeaters are rated for 25 W for continuous duty repeater
service, 
>so it is making rated power. In any case, I wouldn't run it beyond what

>your getting.

<---Not true. TKR-850's should make at least 40 watts when programmed
for
high power.


>> Question 3...The CW ID turns itself on every "X" minutes regardless 
>> of how I set it in the software...am I missing something?  I don't 
>> want it to ID unless there is activity on the repeater.

<---Can't be done using the internal controller. Commercial repeaters ID
whethere they're active or not.

>> Question 4...to float charge a battery, the service manual refers 
>> to "shorting the charge land near R61".  Is this the 2 little traces 
>> on the board?  Should I just solder a jumper across these 2 little 
>> pads?

<---Yes, that's correct.

>> Question 5...anyone have any experience using these units in the 440 
>> MHz range?  I plan to use it in the 460 MHz range, but I was
curious.>
>I know of one right now on the low end of 442 Mhz-runs just fine.

<---We have many running in the ham bands. A slight retune and away you
go!

 
>> Question 6...I bought the repeater used so if I can't get the power 
>> up to the factory specs, would I be ok to turn the power down to say 
>> 5 watts or so and run an external amp or would I be better off 
>> putting in a 3 or 6 db pad between an external amp and the RF out 
>> from the repeater?  I really want the repeater to work up to spec.

<--I think you should look into why it won't make 40 watts when
programmed
for high power (assuming the usual suspects, such as SWR and a
'non-flakey'
cable/connector/power meter isn't the culprit).

Ken

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
Yahoo! Groups Links



 







 
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Ken Arck]

At 04:14 PM 4/18/2005 -0400, you wrote:
>
>Those repeaters are rated for 25 W for continuous duty repeater service, 
>so it is making rated power. In any case, I wouldn't run it beyond what 
>your getting.

<---Not true. TKR-850's should make at least 40 watts when programmed for
high power.


>> Question 3...The CW ID turns itself on every "X" minutes regardless 
>> of how I set it in the software...am I missing something?  I don't 
>> want it to ID unless there is activity on the repeater.

<---Can't be done using the internal controller. Commercial repeaters ID
whethere they're active or not.

>> Question 4...to float charge a battery, the service manual refers 
>> to "shorting the charge land near R61".  Is this the 2 little traces 
>> on the board?  Should I just solder a jumper across these 2 little 
>> pads?

<---Yes, that's correct.

>> Question 5...anyone have any experience using these units in the 440 
>> MHz range?  I plan to use it in the 460 MHz range, but I was curious.>
>I know of one right now on the low end of 442 Mhz-runs just fine.

<---We have many running in the ham bands. A slight retune and away you go!

 
>> Question 6...I bought the repeater used so if I can't get the power 
>> up to the factory specs, would I be ok to turn the power down to say 
>> 5 watts or so and run an external amp or would I be better off 
>> putting in a 3 or 6 db pad between an external amp and the RF out 
>> from the repeater?  I really want the repeater to work up to spec.

<--I think you should look into why it won't make 40 watts when programmed
for high power (assuming the usual suspects, such as SWR and a 'non-flakey'
cable/connector/power meter isn't the culprit).

Ken
--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
Come see us at Dayton 2005!
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
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Re: [Repeater-Builder] Kenwood TKR-850 repeater questions

[Jim B.]

I can answer a couple of your questions, but not all:

rtoplus wrote:

> 
> Howdy all
> 
> I finally have gotten around to setting up my TKR-850 UHF repeater.  
> A few questions.
> 
> I know that power is set up in software, however, I can't get but 
> about 27 watts max out with the software set at max even on the test 
> channels using LDF1 hardline, bird meter, and dummy load.  Any 
> ideas?  I know there is a power adjustment, point VR1 on the PA 
> board, but I can't for the life of me get it to do anything...do I 
> need a special tool or something?  I can't get it to move.  Would 
> this possibly be the problem or something else?

Those repeaters are rated for 25 W for continuous duty repeater service, 
so it is making rated power. In any case, I wouldn't run it beyond what 
your getting.

> 
> Question 2...Initially, the power out was fluctuating 
> wildly...jumping back and forth.  I tightened up the screws on the 
> power transister and all the screws on the board and it seems to 
> have stabilized.  Is there any thing else I should check to verify?  

Make sure all the connectors are tight, and you've got good ground 
conductivity between any two points where two grounds touch, ie, where a 
board screws down to the chassis, etc.

> 
> Question 3...The CW ID turns itself on every "X" minutes regardless 
> of how I set it in the software...am I missing something?  I don't 
> want it to ID unless there is activity on the repeater.
> 
> Question 4...to float charge a battery, the service manual refers 
> to "shorting the charge land near R61".  Is this the 2 little traces 
> on the board?  Should I just solder a jumper across these 2 little 
> pads?

Can't help you on those, sorry.
> 
> Question 5...anyone have any experience using these units in the 440 
> MHz range?  I plan to use it in the 460 MHz range, but I was curious.

I know of one right now on the low end of 442 Mhz-runs just fine.

> 
> Question 6...I bought the repeater used so if I can't get the power 
> up to the factory specs, would I be ok to turn the power down to say 
> 5 watts or so and run an external amp or would I be better off 
> putting in a 3 or 6 db pad between an external amp and the RF out 
> from the repeater?  I really want the repeater to work up to spec.

25 is all it's spec'd for in repeater duty. If you want more, yeah, 
you'll have to put an external amp on it. But for GMRS (assumption on my 
part), you're limited to 50W, and the difference probably won't be 
enough to be worth it. I run abt 40-45 on mine (not a TKR-850, btw), but 
after it gets out of the duplexer it's abt 25W anyway.
Make sure that you're measuring power before the duplexer, btw, cause 
that's where the rated power is measured. If you're getting 25 W after 
the duplexer, you're probably running it too high.
> 
> Sorry for all the questions, but I'm new to Kenwood stuff and I'm 
> trying to learn.
> 
> Thank you
> Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892

Hey, we do what we can!

-- 
Jim Barbour
WD8CHL





 
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[Repeater-Builder] Kenwood TKR-850 repeater questions

[rtoplus]

Howdy all

I finally have gotten around to setting up my TKR-850 UHF repeater.  
A few questions.

I know that power is set up in software, however, I can't get but 
about 27 watts max out with the software set at max even on the test 
channels using LDF1 hardline, bird meter, and dummy load.  Any 
ideas?  I know there is a power adjustment, point VR1 on the PA 
board, but I can't for the life of me get it to do anything...do I 
need a special tool or something?  I can't get it to move.  Would 
this possibly be the problem or something else?

Question 2...Initially, the power out was fluctuating 
wildly...jumping back and forth.  I tightened up the screws on the 
power transister and all the screws on the board and it seems to 
have stabilized.  Is there any thing else I should check to verify?  

Question 3...The CW ID turns itself on every "X" minutes regardless 
of how I set it in the software...am I missing something?  I don't 
want it to ID unless there is activity on the repeater.

Question 4...to float charge a battery, the service manual refers 
to "shorting the charge land near R61".  Is this the 2 little traces 
on the board?  Should I just solder a jumper across these 2 little 
pads?

Question 5...anyone have any experience using these units in the 440 
MHz range?  I plan to use it in the 460 MHz range, but I was curious.

Question 6...I bought the repeater used so if I can't get the power 
up to the factory specs, would I be ok to turn the power down to say 
5 watts or so and run an external amp or would I be better off 
putting in a 3 or 6 db pad between an external amp and the RF out 
from the repeater?  I really want the repeater to work up to spec.

Sorry for all the questions, but I'm new to Kenwood stuff and I'm 
trying to learn.

Thank you
Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892








 
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[Repeater-Builder] KENWOOD TKR-850 UHF REPEATER "YES", it can be tuned in the Ham Band

[Mr John Lloyd]

To answer your question and speculation about whether
or not the Kenwood TKR-850 will tune and operate in
the amateur band, well the answer is "YES".

I have just finished tuning and installing my Kenwood
TKR850 repeater two weeks ago at one of our repeater
sites in south eastern Idaho. 

My frequencies were on 441 Mhz Receive and 446 Mhz  
Transmit. I had to tune the Receiver Helical front end
and set the VCO's. It made factory spec's after
tuning. Mine was a 450-470 mhz version. The
programming and tuning took less than one hour.

I know of another local ham who tuned his TKR-850 in
the Amateur bands. His receives at 443 and transmits
at 448 Mhz. That's two TKR-850 repeaters that I know
of that have been tuned successfully to the 440-450
band from the 450-470 band.

I received my manuals in PDF format. I will check to
see if I can send you a copy.

Thanks,

John Lloyd, K7JL
Intermountain Intertie
http://www.ussc.com/~uvhfs/snowlink.html



Date: Sat, 04 Sep 2004 09:45:34 -0700
From: Eric Lemmon <[EMAIL PROTECTED]>
Subject: Re: KENWOOD TKR-850 UHF REPEATER  Can it be
tuned and Programed in the Ham Band

The answer is "probably."  The fact that others have
tuned a TKR-850 to the 70cm band is not an absolute
guarantee that your unit will do the same.  It may
work fine, or it may barely make it.

The TKR-750 and -850 repeaters have manually-tuned
bandpass filters in the front end that must be
optimized for the Ham bands.  As delivered,
the filters in the TKR-850 are optimized for 450-470
MHz, but still need to be tweaked for maximum receive
sensitivity.  Also, the RX and TX VCOs need to be
adjusted slightly to ensure that they operate over the
optimum locking range.  Like most RF equipment,
operating a TKR repeater outside of its specified band
carries some risk; it's best to minimize the risk with
careful tuning.

Before you attempt to tune this repeater, get a
Service Manual from Pacific Coast Parts, about $23. 
Leave the repeater power on while you're waiting for
the manual, so that the reference crystal oscillator
can "settle in" to a stable frequency.  Every TKR
repeater I have set up needed to have the reference
oscillator tweaked slightly to bring it exactly on
frequency.

73, Eric Lemmon WB6FLY

aj4ef wrote:
> 
> KENWOOD TKR-850 UHF REPEATER Can it be tuned and
Programed in the
> Ham Band?
> The 450-470 Mhz Model.
> I need it to TX 442.100 RX 447.100
> Thanks for the help.
> 







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[Repeater-Builder] Kenwood TKR-850 UHF Repeater in the 70cm Band

[Eric Lemmon]

Mike,

Once I carefully tuned it, the repeater performed better than it did as
delivered.  That's because the front end and PA were originally
stagger-tuned to meet specs over a range of frequencies.  When you have
a service monitor on your bench, you can peak the tuning at the
frequencies of interest- which not only improves the performance, but
also minimizes interference on both transmit and receive.

73, Eric Lemmon WB6FLY

Mike WA6ILQ wrote:
> 
> Once you tuned it up, how well did it work?...




 
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Re: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programedin the Ham Band

[Mike WA6ILQ]

Once you tuned it up, how well did it work?

BTW, from the Kenwood page at repeater-builder:
 >Since the commercial allocation in most ofthe world is 440-470 mHz all the
 >newer Kenwood UHF repeaters are designed cover that range.   This makes
 >moving a recent Kenwood to the USA amateur band a snap - just program them
 >for the new frequencies and retune the RF stages (they come from the factory
 >pretuned in the 460mHz region).   The older ones are iffy - you will have to
 >try it and see if it works.   First measure the performace on the existing
 >commercial frequencies, then program it for 450.0 and measure and compare,
 >then 449.0 and compare, then 448.0, etc.   You will soon figure out which
 >stages are refusing to tune.

And does anybody have a photo of a TKR-720 or 820?  I'd like one to
go along with the ones that are there.

Mike WA6ILQ

At 12:59 PM 9/4/04, you wrote:

>Ken,
>
>It's good to know that Kenwood now offers a TKR-850 repeater that is
>specified for operation down to 440 MHz.  The last one I worked on was
>specified, in black and white, for 450-470 MHz.  Its performance out of
>the box was mediocre on 70cm, and it required careful retuning to work
>in the 440-450 MHz band.
>
>73, Eric Lemmon WB6FLY
>
>Ken Arck wrote:
> >
>... Kenwood spec's the TKR-850 in the ham band.
> >
> > I'm looking at the service manual and there, in black and white, is the 
> freq. spec
> > "Frequency range 440 to 470 Mhz". Not to mention the Kenwood FPU 
> programming software has 440 to 450 Mhz as a valid range. They tune 
> easily and meet full factory spec when retuned...
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>





 
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Re: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programedin the Ham Band

[Eric Lemmon]

Ken,

It's good to know that Kenwood now offers a TKR-850 repeater that is
specified for operation down to 440 MHz.  The last one I worked on was
specified, in black and white, for 450-470 MHz.  Its performance out of
the box was mediocre on 70cm, and it required careful retuning to work
in the 440-450 MHz band.

73, Eric Lemmon WB6FLY

Ken Arck wrote:
> 
... Kenwood spec's the TKR-850 in the ham band.
> 
> I'm looking at the service manual and there, in black and white, is the freq. 
> spec
> "Frequency range 440 to 470 Mhz". Not to mention the Kenwood FPU programming 
> software has 440 to 450 Mhz as a valid range. They tune easily and meet full 
> factory spec when retuned...




 
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Re: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it betunedandProgramed in the Ham Band

[XE2SI]

Let me trow my two cents:
 
Normally the TKR-850 came from factory programed and 
tunned
in the 460 Mhz. range, so if you want to operate in the 
amateur
freq's; is very important to retune the front end to bring 
into specs.
Juan 

  - Mensaje original - 
  De: Ken Arck 
  Para: Repeater-Builder@yahoogroups.com 
  
  Enviado: Saturday, September 04, 2004 
  11:09 AM
  Asunto: [Repeater-Builder] KENWOOD 
  TKR-850 UHF REPEATER Can it be tunedandProgramed in the Ham Band
  At 09:45 AM 9/4/2004 -0700, you wrote:>The answer is 
  "probably."  The fact that others have tuned a TKR-850 to>the 70cm 
  band is not an absolute guarantee that your unit will do 
  the>same.  It may work fine, or it may barely make 
  it.<I'm afraid I have to disagree with your analysis that 
  simply becauseothers have retuned them to 70 cm is no guarantee. In fact, 
  Kenwood spec'sthe TKR-850 in the ham band.I'm looking at the 
  service manual and there, in black and white, is thefreq. 
  spec"Frequency range 440 to 470 Mhz". Not to mention the Kenwood 
  FPUprogramming software has 440 to 450 Mhz as a valid range.They 
  tune easily and meet full factory spec when retuned. I haven't seenone yet 
  that doesn't.Ken













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[Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[Ken Arck]

At 09:45 AM 9/4/2004 -0700, you wrote:

>The answer is "probably."  The fact that others have tuned a TKR-850 to
>the 70cm band is not an absolute guarantee that your unit will do the
>same.  It may work fine, or it may barely make it.

 To visit your group on the web, go to:
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Re: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[Eric Lemmon]

The answer is "probably."  The fact that others have tuned a TKR-850 to
the 70cm band is not an absolute guarantee that your unit will do the
same.  It may work fine, or it may barely make it.

The TKR-750 and -850 repeaters have manually-tuned bandpass filters in
the front end that must be optimized for the Ham bands.  As delivered,
the filters in the TKR-850 are optimized for 450-470 MHz, but still need
to be tweaked for maximum receive sensitivity.  Also, the RX and TX VCOs
need to be adjusted slightly to ensure that they operate over the
optimum locking range.  Like most RF equipment, operating a TKR repeater
outside of its specified band carries some risk; it's best to minimize
the risk with careful tuning.

Before you attempt to tune this repeater, get a Service Manual from
Pacific Coast Parts, about $23.  Leave the repeater power on while
you're waiting for the manual, so that the reference crystal oscillator
can "settle in" to a stable frequency.  Every TKR repeater I have set up
needed to have the reference oscillator tweaked slightly to bring it
exactly on frequency.

73, Eric Lemmon WB6FLY

aj4ef wrote:
> 
> KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the
> Ham Band?
> The 450-470 Mhz Model.
> I need it to TX 442.100 RX 447.100
> Thanks for the help.
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>




 
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Re: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[russ]

Yes!
It is right in the software. You will want to touch up the receiver just a
bit. But it will work just fine with just the software.
73 Russ, W3CH

- Original Message - 
From: "aj4ef" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, September 04, 2004 7:44 AM
Subject: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and
Programed in the Ham Band


> KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the
> Ham Band?
> The 450-470 Mhz Model.
> I need it to TX 442.100 RX 447.100
> Thanks for the help.
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>





 
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RE: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[steve scott]

  YES. Excellent Repeater.

--- W9DHI <[EMAIL PROTECTED]> wrote:

> Yes no problem at all.
> 
> 
> Gregg R. Lengling, W9DHI, Retired
> Administrator http://www.milwaukeehdtv.org
> K2/100 S#3075 KX1 S# 57
> Member:  ARRL, RSGB, RCA, WERA and ORC
>  
> 
> 
> -Original Message-
> From: aj4ef [mailto:[EMAIL PROTECTED] 
> Sent: Saturday, September 04, 2004 6:44 AM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] KENWOOD TKR-850 UHF
> REPEATER Can it be tuned and
> Programed in the Ham Band
> 
> KENWOOD TKR-850 UHF REPEATER Can it be tuned and
> Programed in the 
> Ham Band?
> The 450-470 Mhz Model.
> I need it to TX 442.100 RX 447.100
> Thanks for the help.
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> [EMAIL PROTECTED]
> 
>  
> 
> 




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RE: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[W9DHI]

Yes no problem at all.


Gregg R. Lengling, W9DHI, Retired
Administrator http://www.milwaukeehdtv.org
K2/100 S#3075 KX1 S# 57
Member:  ARRL, RSGB, RCA, WERA and ORC
 


-Original Message-
From: aj4ef [mailto:[EMAIL PROTECTED] 
Sent: Saturday, September 04, 2004 6:44 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and
Programed in the Ham Band

KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the 
Ham Band?
The 450-470 Mhz Model.
I need it to TX 442.100 RX 447.100
Thanks for the help.






 
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[Repeater-Builder] KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the Ham Band

[aj4ef]

KENWOOD TKR-850 UHF REPEATER Can it be tuned and Programed in the 
Ham Band?
The 450-470 Mhz Model.
I need it to TX 442.100 RX 447.100
Thanks for the help.






 
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