Tag Archives: Grundig S350DL

How to fix the Grundig S350DL’s mechanical tuning drift problem

The S350DL may look like a digital radio, but it’s actually analog inside and tuning is prone to drift.

Many thanks to SWLing Post contributor, Ed, who noted my comments about the Grundig S350DL’s tuning drift yesterday, and shared the following fix found on Jeff McMahon’s Herculodge blog.

Ed writes:

The Grundig S350DL’s mechanical tuning drift problem is reportedly easily correctable with a screwdriver:

(Source: The Herculodge)

[…]The drift on AM was terrible! After 10 minutes, it is jumping all over the place – if you touch the radio, the sound mutes and the display goes nuts. I pack it up to take it back but then I decide to google the problem and find this:

http://groups.yahoo.com/group/Grundig-S350/message/4644

I do exactly what he says – I pull off the cover after unscrewing all of the screws (including the 2 in the battery compartment).

Only the speaker is attached to the front. I remove the three screws from the display and then tighten the two screws on the tuning wheels. They were barely loose – almost not noticeable – so I was not too optimistic. I carefully got it all back together (the plastic pieces that hold the fabric handle on only go back on one certain way and were sort of a pain!). I cross my fingers, plug it in, and wow – a brand new radio. The tuning is perfect. Zero drift on FM and AM. AM sounds excellent.[…]

I have an earlier Grundig S350 that I bought at a hamfest years ago which had an easily-fixed power problem. For $20 it makes a nice bathroom radio and it sounds great, especially on FM.

BTW, I found schematics for it on radiomuseum.org, which is a great resource for radio schematics.

Thanks for the tip, Ed! I think I’ll crack open my S350DL later today and give this a try!

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Chris reviews the Eton Field BT and an important note about the discontinued Grundig S350DL

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The Eton Field BT

Many thanks to SWLing Post contributor, Chris Freitas, who notes that’s he’s published a favorable review of the Eton Field BT on his blog: Chris Freitas on Radio

The Field BT shares the same basic chassis as the Tecsun S-8800 (check out the review published yesterday) and several other receivers including the Grundig S350DL, S450DLX, and the C.Crane CCRadio-SW.

Chris and I both agree that one benefit to this type of large portable is the excellent audio fidelity they can provide.

Read Chris’ full review here.

Not all large portables are created equally

The S350DL may look like a digital radio, but it’s actually analog inside and tuning is prone to drift.

Important clarification: The Field BT–just like the S-8800 and S450DLX–does not have the flaky analog tuning of the discontinued Grundig S350DL series.

Since I started publishing videos of the Tecsun S-8800 in action, I’ve received feedback indicating that many assume the S-8800 will drift off frequency like the 2008 era GS350DL.

It’s true that both radios share a common form factor, but that’s where the similarities end.

The S350DL is actually an analog single conversion receiver with a digital frequency display. The S350DL tuning knob has an inner ring for fine tuning and an outer ring for speedy tuning. The big disadvantage of the S350DL is that it drifts off frequency every time the wind blows. At least, that’s how it seems. It’s a little frustrating, and that’s why mine pretty much stays tuned to one station on my kitchen shelf. Even then, it manages to drift off frequency every few days.

The Eton Field BT, Eton Field, Grundig S450DLX, C. Crane CCRadio-SW and Tecsun S-8800, on the other hand, all have a pure digital tuning experience with no drift at all. Most of these are at least double conversion and the S-8800 is even triple conversion.

Chris, thanks again for sharing your review of the Field BT! It sounds like a major improvement over its predecessor, the S450DLX. I understand you’re also evaluating the excellent Grundig Traveller III–we look forward to that review when published!

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