HF radio
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HF radio
Does anyone knows how to find out why PA FAIL and CPLR FAIL occurs on fail mode PS 440 HF controller display panel Honeywell Primus HF 1050 HF radio system?
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Honeywell Primus HF 1050 HF
Hello, I'm not familiar with this set but a quick look on the Honeywell web site shows the CPLR as an "antenna coupler" the PA being a power amplifier of the transmitter. I would guess that the transmitter doesn’t like the antenna its connected to. Under what conditions does this fault display? Is the antenna correctly installed and connected up? Are you using the correct HF antenna? May be worth e-mailing Honeywell
http://www.honeywell.com/sites/servl...6-6D9459F15F99
Regards
Peter
http://www.honeywell.com/sites/servl...6-6D9459F15F99
Regards
Peter
Last edited by Comms Boy; 20th Feb 2011 at 12:15.
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If the coupler failed and the transmitter still tried to transmit with a badly matched antenna, it is likely that the final amplifier stage, the PA, got damaged as well by the reflected HF energy.
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Hi Peter, When you turn the power on it's already read fail. we also done of wiring check on antenna, it's normal. Now i am waiting an answer from aircraft vendor. Cause i am try many times to register on honeywell, it would not work.
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!If the coupler failed and the transmitter still tried to transmit with a badly matched antenna, it is likely that the final amplifier stage, the PA, got damaged as well by the reflected HF energy."
Yeah and if they tried the wrong bits that would have well and truly f
d it up.
SE Asia is a wunnerful place for making counterfeit parts. Save a $ costs you $1000. That simple. All these little numbers and date stamps on the bits are there for a reason...I often wonder how many of these are found after an accident by the inspectors...fake parts I mean. They technically did not cause an accident but WHO really knows?
Yeah and if they tried the wrong bits that would have well and truly f
d it up.SE Asia is a wunnerful place for making counterfeit parts. Save a $ costs you $1000. That simple. All these little numbers and date stamps on the bits are there for a reason...I often wonder how many of these are found after an accident by the inspectors...fake parts I mean. They technically did not cause an accident but WHO really knows?
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dual control,
As i have previously stated, i am not familiar with this set so can only surmise.
Lots of radio equipment performs a BIT test when powered up which tests all the circuits within the radio. This test may momentary activate the transmitter stage of the radio to see if it functions correctly. If there is a miss match between the radio and the antenna system the test will fail. Best to power up with a 50 ohm dummy load connected if not sure.
Unless you know what you are doing with this equipment i suggest you leave it to trained tech as you can cause lots of expensive damage otherwise.
Regards
Peter
As i have previously stated, i am not familiar with this set so can only surmise.
Lots of radio equipment performs a BIT test when powered up which tests all the circuits within the radio. This test may momentary activate the transmitter stage of the radio to see if it functions correctly. If there is a miss match between the radio and the antenna system the test will fail. Best to power up with a 50 ohm dummy load connected if not sure.
Unless you know what you are doing with this equipment i suggest you leave it to trained tech as you can cause lots of expensive damage otherwise.
Regards
Peter
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We have a few problems in this forum. Cockroaches are not easy to eradicate but once you know where they lay their eggs you can control them. The secret is knowing what the eggs look like.
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A disconnection of the the lead between the Receiver/Exciter unit and the Power Amp will produce those symptoms. Basically the PA and Coupler sense there is no output power and then display a fault.
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DERG & COMMS BOYS; There is no BITE test on PS 440 HF controller. BITE test is only for previous controller. ASFKAP; It could be.......coz i am fitted to myfriend nose...... http://images.ibsrv.net/ibsrv/res/sr...ies/icon25.gif
