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Roberts Expression DAB/FM Digital Portable Radio Antenna Replacement

简介

The radio’s antenna can become unscrewed from normal handling, possibly tearing the antenna cable. This guide will explain how to replace the antenna of your Roberts Expression DAB-FM Digital Portable Radio.

你所需要的

  1. Roberts Expression DAB/FM Digital Portable Radio Antenna Replacement, Antenna: 步骤 1 中的图像 1，1

    • Gently pry the speaker grill from the radio, using a spudger if needed.

    • Pry gently as to avoid bending the speaker grill.

    翻译

  3. Roberts Expression DAB/FM Digital Portable Radio Antenna Replacement: 步骤 2 中的图像 1，1

    • Unscrew the 11 Phillips screws on the rear panel, taking note of the varying sizes of screws.

    • Small Phillips screws

    • Medium Phillips screws

    • Large Phillips screws

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  4. Roberts Expression DAB/FM Digital Portable Radio Antenna Replacement: 步骤 3 中的图像 1，1

    • The screw holding the antenna in place may have fallen out, and would be loose in the device or stuck to a speaker magnet. Re-secure the screw if it was loose.

    • Inspect the solder joints that join the coaxial cable to the antenna. If the coaxial cable solder joints are loose, frayed, or snapped, re-soldering is required.

    • If the solder joints are damaged, desolder the coaxial cable from the antenna base.

    • Soldering irons can reach temperatures of up to 900 degrees F. Handle with caution.

    • Carefully solder the antenna signal element to the small wire in the core of the coaxial cable. Ensure the core wire can not touch any other electrical connections.

    • Gently arrange the coaxial cable so that the outer shielding of the coaxial cable can be soldered to the ground of the antenna. Check that the solder joint is sturdy.

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    Excellent guide, got me into the radio without breaking stuff.

    chris turner - 回复

结论

To reassemble your device, follow these instructions in reverse order.

4等其他人完成本指南。

7条评论

Great stuff - very easy once I knew to prise the grill off! Thanks.

Keith Batten - 回复

grate stuff, my radyo is werking againe , tanks

Ian Glish - 回复

Thank You for that information, Martin. I’ve been scratching my head as to how to dismantle one of these radios, despite having been in the repair trade for over 40 years.

mikefortythree - 回复

OK, so English isn’t Martin’s first language, aber wieviele Leuten Deutsche sprechen koennen? Ausgezeichnet Martin - und vielen Dank für Ihre Hilfe

Nick B - 回复

Vielen Dank für diese tolle Anleitung

Rolf Willing - 回复

Many thanks to Martin for this tutorial espacialllly how to dismantle the body of the radio. I had exactly the same problem, so I could patch the fault.

Since the antenna is difficult to turn and therefore the torsional forces act quite strongly on the measly retaining screw, this error probably occurs frequently. With my device the screw, which was too short anyway, did not hold any more, because it was torn out. Therefore I used a much longer screw to give the base of the antenna more stability.

Markus Gräff - 回复

Thank you for the excellent description.

The antenna cable of my radio was ripped off as the shield of the cable was soldered directly to the ground plate closed to the antenna base. So the antenna cable could not follow the small movement of the antenna when rotating it… I added some mm of a flexible wire between ground and shield and hope this will help for the future.

Martin from Lüneburg

Martin - 回复

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