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Thread: In-Line Amplifier alternatives (to RCA D903)

  1. #21
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    Quote Originally Posted by JohnnyBravo View Post
    I have one of these on the way which has a narrow band of 1070 - 1110MHz
    http://shop.kuhne-electronic.de/kuhn...fier/?card=351

    With power inserter
    http://shop.kuhne-electronic.de/kuhn...+Tee/?card=346

    Since the DC power goes over the antenna cable, I'd imagine that the quality of the power supply could have an effect on overall performance.
    Especially cheap power supplies are notorious for being noisy, so I figured I'd build my own one.
    It'll be an 'old-school' style transformer with some chokes and capacitors and none of that SMPS stuff (no offense).
    Ran a simulation of it and should be dead quiet, now time to build it all.

    Currently also awaiting parts, but will share the results as soon as it's all up and running.
    No one will ever be able to accuse you of not going all-in and doing it properly - that's 210EUR worth of gear

  2. #22
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    Status update on my project:

    Has been on hold for a while due to other commitments requiring attention. However, about to kick into gear again on it - been ordering odd parts that may come in handy (like a V-meter display to see what voltage I'm feeding the cable with etc).

    Need to look at suitable coax cable now

  3. #23
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    Quote Originally Posted by JohnnyBravo View Post
    I have one of these on the way which has a narrow band of 1070 - 1110MHz
    http://shop.kuhne-electronic.de/kuhn...fier/?card=351

    With power inserter
    http://shop.kuhne-electronic.de/kuhn...+Tee/?card=346

    Since the DC power goes over the antenna cable, I'd imagine that the quality of the power supply could have an effect on overall performance.
    Especially cheap power supplies are notorious for being noisy, so I figured I'd build my own one.
    It'll be an 'old-school' style transformer with some chokes and capacitors and none of that SMPS stuff (no offense).
    Ran a simulation of it and should be dead quiet, now time to build it all.

    Currently also awaiting parts, but will share the results as soon as it's all up and running.
    Wow! Best gear. The cost is over €200, very few can (or willing to) afford this price.

  4. #24
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    Quote Originally Posted by Laban View Post
    Has been on hold for a while due to other commitments requiring attention. However, about to kick into gear again on it - been ordering odd parts that may come in handy (like a V-meter display to see what voltage I'm feeding the cable with etc).
    Hej Laban,

    Nice to see someone at Malmen! I have F-ESSL4 on the other side of Linköping, very close to ESSL.

    It would be nice to exchange ideas and I can help you with cables if you like, or to borrow a filter for testing.

    If you are intersted send me an email on mrmac (a) fastest.cc


    image.jpg

    (The forum doesn't seem to handle properly rotaded images correctly)

    /M

  5. #25
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    Hello,

    I'm using the follwing amplifier (Swiss made ;-) ) and I'm happy with the results:
    Axing SZU 14-00 DC-Blocker
    Axing TZU 15-02 / Axing TZU 11-01 Power Inserter
    Axing SVS 2-01 Amplifier

  6. #26
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    MrMac! Thanks - would def need help! Sent a msil

    (Sorry for responsetime, I've had my project on ice until now)

  7. #27
    Captain abcd567's Avatar
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    @MrMac
    The meta tag added to image by camera causes this wrong orientation. I downloaded it, rotated it by a photo editor, and reposted below.

    2017-01-26 15.43.18.jpg

  8. #28
    Captain abcd567's Avatar
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    Quote Originally Posted by ameins View Post
    Hello,

    I'm using the follwing amplifier (Swiss made ;-) ) and I'm happy with the results:
    Axing SZU 14-00 DC-Blocker
    Axing TZU 15-02 / Axing TZU 11-01 Power Inserter
    Axing SVS 2-01 Amplifier
    Looks good!







  9. #29
    Purser
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    Quote Originally Posted by abcd567 View Post
    The meta tag added to image by camera causes this wrong orientation.
    I know, but I stopped hard-rotating my images years ago. All modern software should recognize the orientation metadata. If you do both, it starts to get really confusing.

    /M
    F-ESDF1, F-ESGG1, F-ESGP1, F-ESNK1, F-ESNV2, F-ESNV3 F-ESSL4, F-LFMN3
    P-ESGR, P-ESIA, P-ESIB, P-ESGF

  10. #30
    Passenger ttalex's Avatar
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    Axing SVS 2-01 Amplifier gives very good result.
    However, I power it up with 19.2V PSU from the laptop.
    ======
    T-EBCI32 (Raspberry PI 3 + RTL2832U/R820T2 USB dongle + Axing SVS 2-01 inline amp + TA1090EC filter)

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