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No obscenities, discriminatory, abusive, or other content not suitable in public or for younger readers. The supplied 3.7v lithium ion battery has superior run time, and may be easily charged using the supplied USB cable to either a computer or AC outlet (with the appropriate adapter). As reported in various posts throughout this year, the D-808 model has rugged construction with an excellent record of survival under tough conditions, including hot summer days, moderate rain exposure and extended usage as the main receiver during a 9-day ocean cliff DXpedition in Oregon—performing flawlessly at all times. Conclusion It also depends on what you want. If you do everything in a computer, you just need a quadrature oscillator and a pair of mixers for receive and another pair for transmit (and any receive and transmit amplifiers. That’s not as simple as a magic IC that does it all, but it’s simpler than building an SSB transceiver. Personally I prefer protected 18650 batteries in my radios but it appears that XHDATA is confident enough to issue the non protected type. I suppose the D-808 is equipped with a protection circuit and self regulates the charging via USB, as the user manual would not advise against charging the battery internally.
Ačkoli jsme ktomuto rádiu přistupovali sjistou počáteční nedůvěrou, dopadl tento ryze čínský pokus překvapivě dobře. The first time we drove up the road to the lighthouse on the Mull of Kintyre we stopped and I put out a call with the modified walkie talkie and got 57 from the west coast of Northern Ireland about 70 miles away. I have held the call G3SBI since 1963 and a year or so afterwards I bought two AM handheld walkie talkies designed for the USA 27 MHz citizens band.They were not really legal over here but I was keen to see what range could be obtained.Although the receiver was a superhet the best I could do in a built up area was about 1/4 of a mile.Radio Waves: SWL Contest, Shortwave Modernization Concerns, Still Need AM, and ARRL Asks for Comments on 60M Rulemaking The silabs chips can do SSB demodulation, but they seem to have contracts in place as they seem to exclusively supply those to tecsun and other portable radio manufacturers, but not the general public. If your new review has not been Approved after several days you can assume that it was found to not be within the product review T's&C's shown below during screening.
Se světovými přijímači se vposledních letech roztrhl pytel. Dříve to byl zejména všeobecně známý Sangean, následovaný vtěsném závěsu SONY, Grundigem a Etonem, dnes vládne ryzí „čína.“ Nesmíme zapomenout ani na „naši“ Olympii ATS-803, na které mnoho znás začínalo. Absolutely amazing! Thank you for taking the time to put this procedure together and describing the process in such fine detail, Gary! Hats off to you! Refer to the photo below. Using the previous procedure to install shrink tubing (which is described in the PL-380 transplant article) install a 2.5” (63mm) length of shrink tubing over the two Litz wire ends, and shift the shrink tubing into the position shown in the photo. After this is done cut the two Litz wire leads to the lengths shown in the photo (NOTE: make sure that the ends of both Litz wires are cleanly cut, not frayed and at the minimum diameter before attempting to insert them into the shrink tubing. The process is much easier when the Litz wires pass smoothly through the shrink tubing). However in the transceiver chip if it could generate multimode between 64 and 108 MHz it would be easy to have a HF add on with only a mixer and a 50 MHz LPF.Pokud rádi lovíte stanice na dlouhých vlnách, na XH DATA rovnou zapomeňte. Je tam naprosto hluchý. V pásmu majáků kolem 400 kHz už je to lepší, a na středních vlnách zcela bez problémů. Lze však říci, že Tecsun PL-660 je na středních vlnách o něco citlivější, což může být dáno delší feritovou anténou. With today's hit or miss quality control, I've learn to wait awhile when a new radio comes out. In the case of the D-808, I almost missed out entirely. I bought a new D-808 in 2023, and wasn't greatly impressed. After learning that XHData had altered the original RF front end on the D-808 to cut costs, I returned the new radio and bought a slightly-used 2022 model with the original circuit design. I'm glad I did. If you need a small FM transmitter and have a cavalier attitude to spectral purity then it’s easy enough to use a Raspberry Pi or just build an FM bug. But this project opens up another option and gives a chance to experiment with a fascinating chip.
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