XHDATA D-808 Portable Digital Radio FM stereo/SW/MW/LW SSB RDS Air Band Multi Band Radio Speaker with LCD Display Alarm Clock External Antenna

Product Information

Obviously if Silicon Labs do not allow user programmability of the chip that is off the agenda at least for now.

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. Shortly afterwards G3RIK and I were operating /P in Scotland using an ex military B44 ( 5W out ) and a 4×4 yagi. 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. The SI go in the other direction, certainly useful for shortwave, but can they be programmed for various modes, or are they “hardwired” for specific modes. I get the feeling modes and selectivity are adjustable, but from between some preprogrammed modes. So even if you attach your own controller to a Grundig G8 portable’s SI IC, you can get more bandwidths but no SSB.V pásmu VKV je přijímač také velmi citlivý. Rádio má možnost RDS, informace naskakují téměř okamžitě. 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. Refer to the photo below. Lay the two cabinet sections down flat as shown, ensuring that the Litz wire shrink tubing is in the exact position shown (if it isn’t, carefully slide it along both Litz wires until it is in this exact position). Carefully thread one Litz wire end through the empty wrist strap hole, then thread the other Litz wire end through the hole, as shown. Finally pull on the two Litz wires together from the right while guiding the end of the shrink tubing into the empty wrist strap hole, and pull a short section of the shrink tubing through the hole (as shown) to protect the Litz wire insulation from friction damage. Na krátkých vlnách je XH DATA jako doma v celém pásmu, tedy 1,7 – 30 MHz. Umožňuje poslech AM, LSB i USB, a to velmi slušně. Máte dokonce možnost si aktivovat filtry od 500 Hz výše, které jsou pro poslech skutečně užitečné.

NOTE: The Litz wire connection points on the circuit board are surrounded by other important components. It is important to avoid solder drips on these components, or solder bridges to their leads. Solder the Litz wire leads down at an angle to avoid these surrounding components, and use the minimum amount of heat and solder to ensure good electrical connections) I) Amidon 7.5” x .5” ferrite rod, part no. R61-050-750 (MW model) OR part no. R33-050-750 (LW Model), available at http://www.amidoncorp.com/rods-and-tiles/When your Litz wire lead ends resemble the photo above, cut the soldered portion down to a length of 3/16” (5mm) and observe the appearance of the end of the Litz wire. It should have a bright, solid circular shape, with no gaps or individual Litz wires showing. If not, reheat the end of the Litz wire while adding some solder, and repeat this step. 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. The Si4735 DSP chip has markings of “3560, DCUL, .738” and provides a wide range of AM bandwidth choices for the Medium Wave DXer (6K, 4K, 3K, 2.5K, 2K, 1.8K and 1K). These perform very well, and as with the other DSP-enhanced portables, the narrowest bandwidth (1K) provides the most sensitive AM band reception. The D-808 is shipped with a non protected button top 18650 battery with a 67mm length. The protected kind averages 69mm in length and have a conducting strip for the protection circuit board attached at the negative pole. I remember about 20 years ago, I was on the mailing list for one IC company and there was a string of intriguing cellphone ICs. Wait, it was Maxim, and they offered samples. I kept looking at those, knowing they had a lot of what was needed for “SDR’, but it was never clear from the bits they sent out whether they were too sculpted to cellphone applications or they could be shifted to “useful” frequencies.

You can add to or update/edit your existing review's content including the Rating and Time Owned with the Edit button on the right side of the review text body. Edits will go thru the review Approval process. Ačkoli jsme ktomuto rádiu přistupovali sjistou počáteční nedůvěrou, dopadl tento ryze čínský pokus překvapivě dobře. Přijímač XH DATA je pocitově velmi dobrý výrobek. Pokud vezmete na milost jeho strohý design, bude se vám líbit. Rádio skvěle padne do ruky. Je menší než recenzovaný Tecsun PL-660, což rozhodně není na závadu, spíš naopak. XH DATA bychom se nebáli nazvat kapesním rádiem.Refer to the photo below. Using the flat Jeweler’s screwdriver, once all of the glue bonds have been broken and the ferrite rod is loose in its slot, lift the ferrite rod out of its slot on one side by prying up under the plastic cover on the end of the ferrite rod. Ensure that the Litz wire leads have either been cut or desoldered from the circuit board, then grasp the ferrite rod with your fingers and pull it completely out of the slot with a slight twisting motion. Refer to the close up photo above. Following the precautions described, solder the two Litz wire leads down onto the circuit board at an angle, as shown in the photo. After soldering, make a close visual inspection to ensure that there are no solder bridges across the Litz wire connections, or nearby components. The remaining length of the Litz wire leads should be routed in a horizontal manner to the wrist strap hole. 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. More Info: https://xhdata.com.cn/collections/xhdata-hot-selling/products/d-808-radio?variant=43660713558334