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Author Topic: New antenna and amplifier  (Read 49367 times)

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pjm

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Re: New antenna and amplifier
« Reply #60 on: October 17, 2009, 10:11:26 AM »
The Elad preamp is fitted with a relay which bypasses the amplifier when the DC is removed. The amplifier may be faulty

That would explain it, the Antenna is higher than my old one which accounts for the better signal reception when the amp is bypassed.

Not looking good for the pre-amp :(

neroon79

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Re: New antenna and amplifier
« Reply #61 on: October 17, 2009, 10:17:25 AM »
It is nearly impossible, that a switching mode power supply would generate 1090MHz harmonics by itself, because they usually use switching frequencies of about 50kHz up to 160 kHz. This is more ore less 5000 times lower as the 1090Mhz. At 1090Mhz the PSU harmonics shall be as high as the noise itself.
Greetings from northern Germany, Ingo
11.75nm ESE of EDDV

SW: ANRB v5.00.072/6.01.001 on WIN10 64Bit Pro&Home
HW:
Ant.: DPD Productions ADS-B Vertical Outdoor Base Antenna
AMP: Kuhne electr. KU LNA 1090 A TM
Cable: 25m of ECOFLEX 15+
NB: Asus P53E 24/7 op.
PC: 28"4K + 24" Monitor
AirSpy mini @RPi3

Deadcalm

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Re: New antenna and amplifier
« Reply #62 on: October 17, 2009, 10:30:20 AM »
I had a problem with my Elad pre-amp last year.  It was supplied by Wimo, and they arranged for it to be replaced.  In the meantime I purchased a Kuhne pre-amp and Bias-T, which has been running faultlessly ever since - the Elad is now my hot spare...

DC
Go around, I say again go around...

neroon79

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Re: New antenna and amplifier
« Reply #63 on: October 17, 2009, 10:46:14 AM »
I had a problem with my Elad pre-amp last year.  It was supplied by Wimo, and they arranged for it to be replaced.  In the meantime I purchased a Kuhne pre-amp and Bias-T, which has been running faultlessly ever since - the Elad is now my hot spare...

DC
Thank you for the intel!
Greetings from northern Germany, Ingo
11.75nm ESE of EDDV

SW: ANRB v5.00.072/6.01.001 on WIN10 64Bit Pro&Home
HW:
Ant.: DPD Productions ADS-B Vertical Outdoor Base Antenna
AMP: Kuhne electr. KU LNA 1090 A TM
Cable: 25m of ECOFLEX 15+
NB: Asus P53E 24/7 op.
PC: 28"4K + 24" Monitor
AirSpy mini @RPi3