Dear Gary,
Thanks for the calculations.
As we are using a +22dBm amplifier, the output per channel shall work out as
-2dBm (+22dBm - 24dB, and +22dBm is 1dB compression point). However, the
measurement shows that it is -24dBm per channel. Anything we have missed out?
Best Regards,
Chong
Hi Chong,
I am not exactly sure what the equipment is being used for?
Is this a receive amplifier or for transmitters?
How much power output do you get with just one signal applied to the
amplifier?
Will it produce +22dBm with one signal if the input level is increased?
What is the
Wayne,
RG-55/U coaxial cable might not be your best choice. That cable came into
being more than a half-century ago, as MIL-C-17/26, and was canceled late in
1969. The RG-55B/U had two silver-plated copper braid shields, a solid
polyethylene dielectric, and a solid copper center conductor that
Need Power Amp Transistors for VHF 125 watt MSF-5000 repeater, part
number 33P60. Can anyone help? Kent W7AOR www.narri.org
Please e-mail w7aor@ narri.org
--- In Repeater-Builder@yahoogroups.com, Kent [EMAIL PROTECTED] wrote:
GOGGLE THE PART NUMBER many out there..
Need Power Amp Transistors for VHF 125 watt MSF-5000 repeater, part
number 33P60. Can anyone help? Kent W7AOR www.narri.org
Please e-mail w7aor@ narri.org
The transistor you seek is Motorola Part Number 4882233P60, described as
MOSFET_SRFM33P60 and priced at $154.40 each.
Although I don't have a commercial equivalent number for you, I believe that
a careful perusal of an older Motorola RF Device Data Book will reveal the
commercial equivalent. I
http://www.arkansasbusiness.com/article.aspx?aID=102174.87444.114316
I wanted to thank those that have replied and helped me out with
these questions. I realize they are a little off topic but I found
this group through the repeater builder website so I thought it
wouldn't hurt to ask.
Further, if you don't mind, I have developed a related question. I
have
I checked RF Parts www.rfparts.com and did not see it listed but I
would sure give them a call.
Gran
K6RIF
At 12:40 PM 1/11/2008, you wrote:
Need Power Amp Transistors for VHF 125 watt MSF-5000 repeater, part
number 33P60. Can anyone help? Kent W7AOR www.narri.org
Please e-mail w7aor@
Hi All,
Just a quick question to confirm before proceeding to finish.
I have a low band Mitrek on 10mtrs. I am using 2 radios, one for RX and one for
TX. The TX is working fine, and now I am just fixing a couple of issues on the
RX.
I note in the manual and Mike's information the wiring for
Hi Guys,
Another project and another question for you please.
I am installing a TS-32 on my UHF repeater. I followed the
instructions and the decode works OK. Now I want the Encode Output to
be active only when CAS is activated, so there is no ctcss present
when the tail is on.
I can't seem to
Kevin,
When you are using separate radios for TX and RX, it is a good idea to
perform all modifications to both radios, so that they are identical. When
one radio fails, you can simply switch them and be back on the air in
minutes.
73, Eric Lemmon WB6FLY
-Original Message-
From:
If you are going to use a relay, simply use a set of the relay contacts to
break the encode output line.
Chuck
WB2EDV
- Original Message -
From: Jim Cicirello [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, January 11, 2008 9:25 PM
Subject: [Repeater-Builder]
Eric,
Thank you for your quick reply.
I would agree with you in your comments below.
I should point out that I have 3x 60watt models for the RX's and 2x 110 Watters
for the TX (set at 60 watts), so I have spares to swap out as required. I would
hope I don't have that many failures at one
You only need A+ on pin 4 for the Mitrek to receive.
No need for the big red wire in the receiver harness/connector.
Hi Chuck,
Here I have explained to Lowell the problem I am having using a relay to
break the encode output line: Any ideas
Hi Lowell,
Thanks for the information. I have a similar design I think where I use the
COS to turn on a transistor that operates a relay that the encoder goes
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