Re: [Repeater-Builder] Source for 175 MHz 1/2 Wave whip?

2004-02-11 Thread Marvin Munster
That's what they offer commercially.  Very pricey.  I think it has to do 
with not using a ground plane, just the coax.  Does that sound correct?
Marvin - WB6PKK

At 11:42 AM 2/10/2004, you wrote:
[EMAIL PROTECTED] wrote:

 Slightly off topic, but in the realm of RF.  Does anyone know of a
 
 source for 175 MHz 1/2 Wave whip?
   It's for a radio mic.
 
 

Why do want a 1/2-wave and not a 1/4-wave? or was that a typo?
A 1/2-wave end-fed whip is NOT 50 ohm.
--
Jim Barbour
WD8CHL







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Re: [Repeater-Builder] Motorola TPN1106A Pwr Supply

2004-02-11 Thread Ted Maczulat
The only batteries that are safe for indoor use are sealed type batteries.
(Gel Cell)
We use 2 100AH Gel Cell batteries in the bottom of the equipment racks that
house the VE7RPA and
an service rack I have in my shop.  Vented rechargable(lead/acid) batteries
emit hydrogen gas when they are being charged
and represent a significant explosion risk.  These batteries must be in a
(sealed to the inside) enclosure that is vented outside.
Photos of the VE7RPA installation are at:  http://ve7ku.dyndns.org/ve7rpa

The Float - Equalize switch shifts the regulated voltage output on the
heavy current output up and down.  In the 1106 manual
the Float position the voltage is set at 13.0 volts and in Equalize the
setting is 14.0 volts.  These voltages are for Lead Acid Batteries.

The Tone Pot is an alert tone for low battery voltage.  It is only present
if the power supply has the C29 option for Battery protection and Alarm.

Ted, VE7TFM
IRLP Node 1120


- Original Message - 
From: ka9qjg1 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, February 11, 2004 10:54 AM
Subject: [Repeater-Builder] Motorola TPN1106A Pwr Supply


   Can someone Please ID What the Wires coming out of the
Motorola Micor
   TPN1106A

   3 wires coming out   by the 13.8 Amp terminal.  and
their use

   1 Small 2 Ft Black
   1  Small 2 Ft. Brn/Blk
   1   Larger Blue Shielded with a push on lug

   I Have a another Power supply like this and it don't
have this This,
one has the wires with the plug
   that gos on the Bottom of the Micor Backplane.

   What is the Switch Equalize and Float for If I was not
using a
   battery backup ?
   also the Pot marked Tone Lvl

   if I decide to use the Backup  is it safe to use a
Battery setting in
   the bottom of a 6 Ft rack
   inside the Radio Room at home .

   Thanks Don KA9QJG






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[Repeater-Builder] Motorola TPN1106A Pwr Supply

2004-02-11 Thread ka9qjg1
  Can someone Please ID What the Wires coming out of the 
Motorola Micor
  TPN1106A

  3 wires coming out   by the 13.8 Amp terminal.  and their use

  1 Small 2 Ft Black 
  1  Small 2 Ft. Brn/Blk
  1   Larger Blue Shielded with a push on lug 

  I Have a another Power supply like this and it don't  have 
this This,
   one has the wires with the plug 
  that gos on the Bottom of the Micor Backplane.

  What is the Switch Equalize and Float for If I was not using a
  battery backup ?
  also the Pot marked Tone Lvl

  if I decide to use the Backup  is it safe to use a Battery 
setting in
  the bottom of a 6 Ft rack 
  inside the Radio Room at home . 

  Thanks Don KA9QJG 





 
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