[arm-allstar] Simplex and Allstar

Sat Oct 19 21:13:02 EDT 2019

Actually...The fees, as I gathered, for $11.00 are 3.9% plus $.30.  Close
enough for me...(I think!)

Joe - W7RKN

-----Original Message-----
From: ARM-allstar [mailto:arm-allstar-bounces at hamvoip.org] On Behalf Of
"David McGough via ARM-allstar"
Sent: Saturday, October 19, 2019 5:57 PM
To: Kipton Moravec
Cc: David McGough; ARM Allstar
Subject: Re: [arm-allstar] Simplex and Allstar

Hi Kip,

For the Kenwood mobiles, the simplest way to determine the frequency split
is to look at the FCC ID info on the radios. For example, take a look at
the FCC ID's on these web pages:

https://www.kenwood.com/usa/com/lmr/tk-7180h_8180h/spec.html
https://www.kenwood.com/usa/com/lmr/tk-690_790_890/spec.html

You can program the Type-1 TK-790H for the 2M ham band without any special
requirements. There may be a small drop off in receiver performance.
You can peak the RX up, if required. The procedure is on page 70 of the 
service manual, here:

http://www.repeater-builder.com/kenwood/pdfs/tk-790-svc-man-2001.pdf

I've never had to make any other adjustments. However, theoretically 
speaking, it's possible you might have to adjust the PLL lock range, too 
(page 69).

The TK-7180(h) radios don't require any adjustment.

73, David KB4FXC

On Fri, 18 Oct 2019, Kipton Moravec wrote:

> You said:
> 
> More recently, I'm finding that I like the Kenwood TK-690H/790H/890H
> (VHF lo, hi and UHF) for high power. The TK-7160 (VHF Hi) is great, too.
> These Kenwood radios are just program, plug and play.
> 
> According to this:
> 
> https://www.kenwood.com/usa/com/lmr/tk-690_790_890/spec.html
> 
> 
> Model 	TK-690H 	TK-790H 	TK-790 	TK-890H
TK-890
> GENERAL
> Frequency Range 	Type 1 	29.7-37.0 MHz 	148-174 MHz 	148-174 MHz 
> 450-480 MHz 	450-490 MHz
> Type 2 	35.0-43.0 MHz 	- 	136-156 MHz 	- 	480-512 MHz
> Type 3 	39.0-50.0 MHz 	- 	- 	- 	403-430 MHz
> 
> So the TK-790H is just above the Amateur Frequencies.
> 
> And if it is a TK-790 how do you know if it is a Type 1 or Type 2?
> 
>
https://www.ebay.com/itm/KENWOOD-TK-790H-VHF-146-174-110-Watt-Mobile-Rear-Re
mote-Mount-HAM-Radio-KRK-5/113595002935?epid=1201869040&hash=item1a72ca3037:
g:7ucAAOSwMkdcSgXs
> This one says 146-174 MHz. Can that be right?
> 
>
https://www.ebay.com/itm/Kenwood-TK-790-Radio-DC-13-6V-12A-VHF-FM-Transceive
r-Radio-See-Pics/153688508248?epid=1803902483&hash=item23c88c8758:g:S8cAAOSw
BIVdqNa0
> This one looks like a Type 1, above the ham band.
> 
>
https://www.ebay.com/itm/KENWOOD-TK-790-PCI-RACE-RADIO-45-WATTS-160chs-MOBIL
E-DASHMOUNT-COMPLETE/264497551406?hash=item3d9548582e:g:2GQAAOSwIhVdLe25
> 
> UP FOR SALE IS A GREAT CONDITION-COMPLETE BUNDLE
> KENWOOD TK-790 45W PCI RACE RADIO WITH
> ALL THE ACCESSORIES YOU NEED
> 160 channels Wide-band/Narrowband for Ham or Commercial use.
> 141-174mhz VHFÂ  45-Watts full power.
> 
> How can this have a different frequency range?
> 
> 
> This is confusing.
> 
> Kip
> 
> On 10/18/19 10:37 PM, "David McGough via ARM-allstar" wrote:
> > Hi Kip,
> >
> > Okay, I now better understand your usage plan and sure, that'll work.
> >
> > There are a great many surplus radio choices available, remembering that
> > since this radio will be linked to a repeater system and in use during a
> > net, it'll likely require very high TX duty cycle. So, how large is your
> > proposed simplex coverage area? ...Or, stated more directly, how much TX
> > power do you expect to need?
> >
> > I'll mention that I've previously used (really old now!) GE Rangr and
> > Motorola MaraTracs/Syntors for this type application. I'd set the TX
power
> > at about 80W. With careful forced air cooling when transmitting, they'll
> > run 100% duty cycle all day long.
> >
> > More recently, I'm finding that I like the Kenwood TK-690H/790H/890H
> > (VHF lo, hi and UHF) for high power. The TK-7160 (VHF Hi) is great, too.
> > These Kenwood radios are just program, plug and play.
> >
> > ...And, there are MANY other radios, like the Motorola CDM1250 VHF.
> >
> > Hopefully other hams will comment of radios they've had easy success
with.
> >
> > 73, David KB4FXC
> >
> >
> > On Fri, 18 Oct 2019, "David McGough via ARM-allstar" wrote:
> >
> >>
> >> Forwarding to the arm-allstar list.....
> >>
> >>
----------------------------------------------------------------------------
-
> >> Date: Fri, 18 Oct 2019 21:38:30 -0500
> >> From: Kipton Moravec <kip at kdream.com>
> >> To: David McGough <kb4fxc at inttek.net>
> >> Subject: Re: [arm-allstar] Simplex and Allstar
> >>
> >> Obviously I am not making myself clear.
> >>
> >> We have a Skywarn net with one VHF repeater and soon to be 2 UHF
> >> repeaters linked via Allstar only during the Skywarn net.
> >>
> >> The simplex frequency is for one user (NWS) who cannot reliability hit
> >> the repeater when the other repeater on the same frequency is active.
We
> >> have other repeaters linked, but they are UHF and the NWS UHF antenna
is
> >> 30 feet below the VHF antenna. We are 70 km from NWS and there are
hills
> >> between. We do not believe UHF will make it but we will test it in
> >> December. This is in case that test fails. We will link the Simplex
> >> radio to the other repeaters only when there is a skywarn net. The rest
> >> of the time it will be off-line.
> >>
> >> The idea is during Skywarn we have a directed net. When someone is
> >> talking on the net it would be repeated through the simplex frequency
> >> for NWS to hear. When noone is talking on the net, the NWS could use
> >> that frequency to talk to net control and everyone could hear. (It
would
> >> work like a RF link frequency between two repeaters.)
> >>
> >> I hope that is clearer for everybody.
> >>
> >>
> >> You said,
> >>
> >> There are lots of mobile radios (both ham and commercial) available
with
> >> COS signaling already provided via an accessory connector. A good
solution
> >> here is to obtain a commercial radio surplus--such as from ebay. There
are
> >> many radios that work well and are inexpensive.
> >>
> >>
> >> Where is a list so when looking on ebay or elsewhere I will know if the
> >> radio has the COR signal available?
> >>
> >> Kip
> >>
> > _______________________________________________
> >
> > ARM-allstar mailing list
> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
> >
> 

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