At 6/30/2008 08:53, you wrote:
>The pad is only used during testing to isolate mismatch between the
>signal generator and spectrum analyzer and the device under test - not
>to be left in permanently. At WACOM it was standard practice to use a
>10 dB pad between the test equipment and the device un
At 6/30/2008 08:48, you wrote:
> > >This is why it is best to put about 1-2 db 50 ohm pad
> > between the duplexer
> > >and the receiver, to help keep the receive side at 50 ohm.
> >
> > And degrade my system sensitivity by that same amount? No thanks.
>
>Maybe I misunderstood - I thought he was s
> "Steve S. Bosshard (NU5D)" <[EMAIL PROTECTED]> wrote:
> No Skipp, deviation was not mentioned, but the frequency change is on
> the same magnitude as increasing transmitter deviation - a 12.5 khz
> shift in frequency. 73, Steve NU5D
OK, if you think they are the same... fine with me.
cheers
Hello Gerry
I am having problems with your address and get the mail returned. I have
in the last hour sent you a paypal for $55. Pls send me a return message when
you find it credited to your account. I am not used to sending a paypal
payment. My ship to address is Tom Manning, AF4UG 43
Dennis,
The Motorola TLD1693D power amplifier is rated at 100 watts continuous duty
for the 150.8 to 162 MHz band. It will not operate properly outside of that
band without extensive (and very expensive) modification. The
specifications state that it requires 400 mW of drive, and it draws 20.5
a
Dennis,
That is a General Electric model number, but I could not find it listed in
the microfiche file. Please check very carefully for any other numbers on
this device, especially any number stamped in black ink along the edge of a
PCB.
73, Eric Lemmon WB6FLY
-Original Message-
From:
My last post I listed what was an apparent GE model# 19xxx
Anyway, I have located a Motorola TLD1693D which I do believe is a Motorola
Micor AMP and would like to know some info about it - drive requirements and
current would be extremely helpful.
73, Dennis Griffin - W4DG
garyp609 wrote:
> If a repeater was on 447.575 and the frequency was changed to 447.5625
> would the duplexers need to be re-tuned?
> Thanks & 73's
> Gary K2ACY
That depends:
How picky are you about your tuning and doing it right?
(GRIN)
Nate WY0X
Hi, Dennis.
Your model number looks like a GE part number so it might be hard to get
Motorola information on it.
Butch, KE7FEL/r
To: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Mon, 30 Jun 2008 17:26:08
-0400Subject: [Repeater-Builder] ID INFO NEEDED
Hello all:
I’m trying to locate inform
Hello all:
I'm trying to locate information of a Motorola TX Amp model #19A149544G1
Specifically, power rating, frequency current requirements, etc.
TNX in advance!
73, Dennis - W4DG
Someone gave me a unit to tune up on the UHF ham band. No label on it. Four
cavities, two female N connectors on each one, obviously Bp/Br as there are two
tuning adjustments (long threaded rod, shorter slotted rod), Celwave design.
I've got one that's very similar on 896 MHz and I've also got s
If you see several db difference with a 12.5 KHz frequency shift then your
duplexer is also distorting your audio on the transmitted signal. It would
induce unwanted phase shifts and also unwanted amplitude changes in the
transmitted signal.
73
Gary K4FMX
> -Original Message-
> From: Rep
The pad is only used during testing to isolate mismatch between the
signal generator and spectrum analyzer and the device under test - not
to be left in permanently. At WACOM it was standard practice to use a
10 dB pad between the test equipment and the device under test. This is
because it i
> >This is why it is best to put about 1-2 db 50 ohm pad
> between the duplexer
> >and the receiver, to help keep the receive side at 50 ohm.
>
> And degrade my system sensitivity by that same amount? No thanks.
Maybe I misunderstood - I thought he was suggesting using pads while tuning,
not du
No Skipp, deviation was not mentioned, but the frequency change is on
the same magnitude as increasing transmitter deviation - a 12.5 khz
shift in frequency. 73, Steve NU5D
skipp025 wrote:
>> "Steve S. Bosshard (NU5D)" <[EMAIL PROTECTED]> wrote:
>> I beg to differ on this one, most respectfull
> "Steve S. Bosshard (NU5D)" <[EMAIL PROTECTED]> wrote:
> I beg to differ on this one, most respectfully, but we are
> talking about the difference between running the transmitter
> at 2.5 Khz deviation vs 5.0 Khz, ie, 12.5 Khz occupied band
> width, vs, 25 khz occupied band width - does this me
I'd go with more like 6 or 10 dB. The return loss of a pad is equal to
twice its insertion loss, so if you use a 6 dB pad, the worst-case return
loss would be 12 dB (i.e. if the pad were open or shorted at the far end).
This 12 dB plus whatever the return loss is of the device under test (which,
At 6/29/2008 22:57, you wrote:
>This is why it is best to put about 1-2 db 50 ohm pad between the duplexer
>and the receiver, to help keep the receive side at 50 ohm.
And degrade my system sensitivity by that same amount? No thanks. The
duplexer simply has to be able to deal with the mismatch
Hello Wayne and all---
Point of intrest-OSH (Orchard Supply Hardware) started in downtown San
Jose California, at the South end of San Francisco Bay---right in the middle
of what used to be the heart of California orchard country. The orchards
here are all gone now and OSH has spread wildly
Tower lighting requirments go back decades. Only in past few years has some
rules changed that required strobes during the day and allowed towers not to
have to be painted the red/white. Lower towers only require night lighting I
think.
The above 200 ft requiring lighting has been around for
Hello group! I am in need of assistance in programming some SM-50
mobile radios into the 440 ham band. What is the easiest way to do
this? I have version 3 of the RSS. Feel free to PM me @
[EMAIL PROTECTED]
Thanks,
K0FCQ
We use a GE Mastr II VHF Repeater here in St. Thomas, Virgin Islands.
We need to improve reception around the island due to the high use of
handhelds and rugged terrain. We hope to add three remote receivers to
our system. We have a couple of modified GE MVPs with a 2mtr RX and a
70cm TX. We are lo
I beg to differ on this one, most respectfully, but we are talking about
the difference between running the transmitter at 2.5 Khz deviation vs
5.0 Khz, ie, 12.5 Khz occupied band width, vs, 25 khz occupied band
width - does this mean a duplexer retune is needed when we switch from
narrow FM to
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