Two radios on one power supply cause problem
A viewer has a problem powering two radios from one power supply.
This situation is quite likely very common among amateur radio operators who keep a simple shack set up with one large power supply feeding multiple loads.
Many operators use a DC power distribution system like the RIGrunner from West Mountain Radio to distribute the power.
In this case, the viewer simply has the power cords for both radios tied straight to the DC power output posts on the power supply.
Equipment involved includes:
- Power Supply Astron RS35A
- IC-746 (the non pro version)
- Kenwood TS-180S
The problem:
Whenever the Kenwood TS-180S radio is powered on, the Icom IC-746 will not transmit and the display screen goes white with no visible characters.
If you turn the Kenwood TS-180S off, the Icom-746 returns to normal operation.
The Kenwood radio shows no problems when the Icom is on or off.
The viewer asks for thoughts on what may be causing this behavior.
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Tags: Icom, Kenwood, Power Supply
You might try these steps:
First, mess with the orientation and placement of the DC power cables just to see if there is any noticeable change in behavior. Try coiling the DC cable to make a simple RF choke.
Second, try wrapping each power cord around a type 43 toroid one toroid per radio power cable; This will help keep any common mode energy contained and may help.
Third, try putting one or both radios into dummy loads.
John