We're pretty sour on the Kenwood repeaters though we have a few
mobiles. Used to do a fair amount of Motorola work until we went
EDACS. Some 1400 EDACS radios and 100 or so Orion VHF's with paid tech
support makes us lean toward what we are familiar with.
The 720 has been running at 25W. driving the TPL. Several PA devices
have been replaced and numerous re-solder jobs have been needed, this
with additional ventilation holes drilled into the PA case with an
additional fan to draw air through it. Silver solder has been used for
some time at Kenwood's suggestion. It resides in an air conditioned
building with some of our EDACS stuff. Problem is that the repeater is
a major player, both during drive time and as the major SKYWARN system
in the area.
Len Revelle N9IJ
[email protected]
On Jun 21, 2009, at 2:47 PM, NORM KNAPP wrote:
Mastr III is a good choice. MTR-2000 is a good choice also, but
repairs if ever needed can be VERY expensive. Power supplys are out
of sight.
Are you totally sour on Kenwoods. I would look into the TKR-7400
series from Kenwood systems. Really good specs for the price.
Back to the 720. What is the power output set too, or how much drive
does the TPL take for 100watts out?
I have had to re-solder the RF pa transistor in one or two in the
past. They don't like running wide open all the time. TKR-750 is a
good repeater also.
73 de N5NPO
----- Original Message -----
From: [email protected] <[email protected]
>
To: [email protected] <Repeater-
[email protected]>
Sent: Sun Jun 21 13:21:51 2009
Subject: RE: [Repeater-Builder] VHF repeater suggestions...
If had an emergency manager willing to pay for a repeater I would
replace it with a Motorola MTR2000 with the front end pre selector
and necessary connection to connect to an external controller. Hard
to get much better.
Mike
Mike Mullarkey K7PFJ
6886 Sage Ave
Firestone, Co 80504
303-954-9695 Home
303-954-9693 Home Office & Fax
303-718-8052 Cellular
From: [email protected] [mailto:[email protected]
] On Behalf Of Len Revelle
Sent: Sunday, June 21, 2009 8:25 AM
To: [email protected]
Subject: [Repeater-Builder] VHF repeater suggestions...
Our local RACES group has a Kenwood TKR-720 driving a TPL PA that they
were ill-advised to purchase some years ago. It is maintained by the
county radio shop for various reasons and has been a nightmare. Once
again the final in the Kenwood has done a meltdown.
That said, the local EMA manager, also a new ham, wishes to replace it
if he can squeeze the funds out somewhere. My recommendation,
obviously the most expensive, was a Master III and new Arcom
controller simply because the county already maintains three VHF M3's
and a 5-site, 8-channel trunked system using 800 M3's. Parts and
support are good.
I would really appreciate input, both regarding setting up a Master
III, or other viable repeater. We need, minimally, 100% duty-cycle at
approximately 100 watts, good parts and support available, and
reliability. Is there a decent source for M3's with P25 becoming more
desirable, etc..
I don't want a, "mine is better than yours," war so off-reflector
replies are also welcome. TIA...
Len Revelle N9IJ
[email protected] <mailto:n9ij%40comcast.net>
