Over the past few days, I have been testing a few different low cost / simple aerials for use on the FM broadcast band (87.5-108MHz). All these aerials have a cost of under $10, the idea of this

Thanks Peter, I've had a quick read of the AN400 document and couldn't see an external varicap listed on the BOM's. I'm guessing the varicap might well be on-board the chip, which may be another

hi all, just curious, what group is this? i'm in lockdown like many others, and am looking for groups like this wonderful one hence my question :) Majid -- kind regards, Majid Hussain

The radio is on a chip. You put power in, RF in, get audio out. Everything is done by the chip. Your only job is to tell the chip what you

Hi Lamont, I have just ordered 10 x 500pf varicaps via ebay.co.uk to use in (I hope!) a varicap tuned indoor frame loop. They only cost 1GBP from China, of course. There were many other vendors

Maybe I need to refine my question a bit. The discuss was about if a radio is designed today, will it incorporate a receive chip.  It all started with someone saying Varicap availability is

All digital radios use DSP chips, but Tecsun's analog radio's also use an Integrated Circuit. Specifically, that I know, are the R-911 and R-9012. These use a CXA-1622B chip IIRC designed by SONY.

------------------------- **FMDXerDB - Report** Report Date: 04/07/2020 Report Time: 10:13:27 Freq / Name: 087.6MHz - TOTE SPORTS Site / Type: Abels Hill, Launceston Tasmania - LPON Notes: Logged

Recently I have purchased a large A/B audio switch box, this is being used for direct audio / signal testing of various radios. I have mounted this in a large case and have run two 3.5mm audio

Thanks Richard. It is something that I am really interested in and enjoying.-- Paul - Moderator UltralightDX

Anything with a digital display pretty much would. Paul -- Paul - Moderator UltralightDX

"Mostly" is pretty vague. The Tecsun line all seem to be built on the Silicon Labs, maybe better known as SiLabs, chips. Silicon Labs is a fine American company with operations all over. See the

Paul: Thanks for posting the article. I’ve been FM DXing since 2010 using barefoot Tecsun ULR, primarily a PL-606. To date I’ve logged 876 stations from across North America. I have tried using

I'm following a thread on a group with an argument about whether new AM radios are now mostly designed with a chip for the radio receive circuitry. Does anyone have a website with either a list of

Recently I have purchased a small A/B audio switch box, this is being used for direct audio / signal testing of various radios. I have mounted this in a small case and have run two 3.5mm audio

Thank you, Gary!

Hello Igvitk, Litz wire and ferrite optimized for the MW frequencies really isn't recommended for SW performance. Especially in a sharp-tuning FSL antenna, going outside the recommended frequency

Hi all! I was trying to make 3 inch FSL antenna for MW band, but I ordered less than necessary of AWG 250/46 litz, and did not get the required inductance (just 180 uh instead of 350 uh). As a result,

Portable Ultralight Radio DXing Case - March 2020 - An Update After building my latest case, I found a couple of issues. I needed to protect the screens and cases of my radios and I also had an

------------------------- **FMDXerDB - Report** Report Date: 04/01/2020 Report Time: 19:30:30 Freq / Name: 087.6MHz - TOTE SPORTS Site / Type: Abels Hill, Launceston Tasmania - LPON Notes: Logged