AM and FM DX

Yes, in my preferred DX spot, my line of sight to Mount Sugarloaf is impacted slightly.

Rhema on 99.7 is the strongest signal of the lot, as it comes off a different tower further south, which helps.

On a clear day with a good pair of binoculars, I can see the Central Coast TX at Somersby! (62 km away), but clear days don’t come very often, easier in the winter.

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Assume the LNA was set to on?

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Mine doesn’t have an LNA switch by the looks of it? (white switch near the top left).
Unlike in this video here

Does yours have one?

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Yes. You can see it in this image I posted. It works for me for FM with the whip antenna but not for an already amplified antenna and not for MW.

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Thanks! I did not know at the time that I bought it that there was an LNA version… in that Youtube video, it seems like it makes a considerable difference, are you finding that too?

Edit: I see in one of @Informer 's post that the LNA might be an ‘always on’ feature in the one I have.

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I wouldn’t say considerable in reception quality. I does make the signal meter go higher though.

If yous has an always on version, perhaps the software can adjust the gain in one of the settings?

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I’m only assuming it’s ‘always on’ going by his post.
I haven’t yet tried updating / changing the software via the PC.
I will have to try to that.
Thanks.

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@Radiohead in your list you don’t have 2HD Belmont?
Also noted you get both SCA & ARN stations from Artarmon at exactly the same dB level, not sure if it still is but KIIS switched from main to Alt (side-mount antenna) at 6pm last night (Friday) so would’ve thought it may have been lower than the other 3, but then they may have been on the main when you did the testing?

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Thanks! Fixed re 2HD.

Checked KIIS again, still at Artarmon (52db again).

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Mmm yep, looks like KIIS is back on the main Artarmon antenna given the usual wide 420kHz bandwidth of the main antenna transmitter’s signal characteristics.

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Have a closer look at the software settings config screen first as mentioned by @TV.Cynic I’m not familiar with v2 firmware, if any software settings for a LNA setting in that model of TEF. There’s certainly an RF gain setting in v1.18 firmware config settings, that even I didn’t pick up on in earlier days of tinkering with the TEF.

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I ordered (and paid extra for) an LNA version. The case says LNA but has no LNA switch. I’ve since opened the case looking for a bootloader button, definately no LNA on mine.

The LNA definitely adds a few S points. I’ll get an RDS decode at S1 or S2. And rarely see S9+ or more. No complaints - very happy with what I have.

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I’ve read a few reports of buyers experiencing that problem with sellers. I thought with the amount of money that @radiohead paid for the TEF that it was a LNA version, maybe the extra $ was just for the preinstalled v2 firmware which does save a lot of bother from doing a firmware upgrade & the risks associated with that.
Yeah bottom line is the results one’s getting & most are happy with their purchases.
There is always the option of attaching a dc isolated low noise RF amp to the antenna input & seeing what, if any, extra signal gain & the all important increase in SNR is achieved, if well away from high signal strength stations & RFI. Or trialling a small yagi in some cases, if room allows.

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Found that it says on mine too

20240309_204136

Must be “always on” or configurable in the software.

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Or the manufacturer uses the same case for the real LNA version with switch as the version without a LNA or hardware switch(able) LNA version. :man_shrugging:

As for getting into the settings v1.18 (which you probably know already). I just hold down the red (mode) button for a few seconds. The screen will display various settings. The RF gain setting is tagged as ‘Set Level offset’. To adjust, press the rotary tune button & then rotate to adjust between -25dB to +15dB.

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Doesn’t appear that way, as there is no “blank space” on the left hand side where the LNA button appears to be.

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In V2 software that adjustment is under FM Settings

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Is it only radios without the LNA switch that have the RF Gain setting within the menu, or is the RF Gain setting available for all models?

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Noticed that with the TEF going from almost flat (2.5V on display) to fully charged (4.3V) is taking around 8 hours with a 15W charger…A bit slow for my liking.

Has anyone tried a fast charger, not sure if the TEF supports it or not.

At least charging it more slowly should prolong battery life.

Mine needs charging at least once a week.

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I’m still tossing up what TEF to buy, reading just about everything I can, the silver ones seem to have crisper/clearer sound than the blue ones but there’s nothing wrong with the blue ones sound, apparently the sound varies depending on received signal strength of stations, strong signals must distort the sound a bit on one of them, one guys review I read has both & said one sounds better in the city areas & the other outside the city area.

I’ve also seen inside the one @Radiohead has, as a guy who has one, much like @Informer pulled it apart, while it has 2 speaker grills on the front, from V5.0 onwards it only has one speaker, which is supposedly better than the previous (stereo) versions, under the second speaker grill it’s only a fake speaker.

Also that one Radiohead has, doesn’t have an LNA, it’s not permanently on & not software changeable, it needs the switch on the side.
Looking from the back, the printed circuit board is made to have the LNA & switch, but those that have no switch have no LNA components on the PCB either which looks to be located at the top right hand side of the board, just to the left/behind the switch, those radio’s with the LNA & switch, the LNA circuit is shielded with a metal cover, on those without the switch & LNA, that space isn’t shielded/covered, you can see the components circuit tracks.

It’s not possible/available to have the LNA in the silver ones, & apparently the LNA boosts the signal level by 20dB & can cause some RDS reception issues if you boost already strong signals with it on, this may be resolved with a later firmware version, who knows, but it’s currently albeit probably minor one with the latest V2 firmware.

Knowing that now, I can see why Informer is rightly pissed about paying extra for one with the LNA, but not getting it.

I actually want one of these https://www.pe5pvb.nl/tef-dsp-fm-tuner-v2/?fbclid=IwAR0nhjkuEbnckcVkL6XohRO-_io9LRvHH11AQUX_JXzRUbdDbmVLsvTQEKw

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