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Author Topic: Min operating voltage for various monoband FM rigs  (Read 329 times)
KF6IIU
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Posts: 293




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« on: February 22, 2008, 03:19:46 PM »

Does anyone have data for the minimum operating voltage for the following monoband FM rigs?

Alinco DR-135T
Icom 2200H
Kenwood TM-271A
Yaesu FT-1802M, FT-2800M

Thanks in advance.

As a data point, my Icom IC-706mkIIg drops out at about 11.5 volts.
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W3LK
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Posts: 5644




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« Reply #1 on: February 22, 2008, 03:36:09 PM »

Just about any rig designed to run on 13.8v will drop out below 11v.

73,

Lon - W3LK
Naugatuck, Connecticut
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AA4PB
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Posts: 12639




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« Reply #2 on: February 22, 2008, 04:16:56 PM »

The manual for the DR-135 says 11.7V minimum.

The minimum voltage is not necessarily where the radio "drops out", meaning that it fails to power up or function. It is also a matter of meeting purity, stabability, and other specs at that voltage. The fact that a radio "operates" below the minimum specified voltage does not necessarily mean that it operates properly.
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KF6ZLB
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Posts: 101




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« Reply #3 on: February 22, 2008, 04:26:15 PM »

The manual for each says they run on 13.8V +/- 15%.

The low end of that range is 11.7 V

The current drain during TX varies:

Alinco: 11 A
ICOM: 15 A
Kenwood: 12 A
Both Yaesus: 10 A
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