Built in decoder, 2 address lines select one of four fet switches. Soft rock bolting guide introduction the short version. I have just finished migrating the development version of the permanent site for the softrock40r to my org site, wb5rvz. Soft rock bolting guide introduction the short version for. Softrock lite ii combined receiver kit bill of material.
Ham radio kits built radios enclosures ham radio, electronics, kits, softrock radio. I often refer to a softrock sdr on this page but any sdr that will work with hdsdr may. This plugin board turns the softrock into an all band transceiver, minus the control functions and tx low pass filters which need to be provided by additional modules. The 74ac74 fst3253 lt6231 combination as used on softrock boards is a cheap, minimal component and easy to solder solution. Aj4mc p2of 17 2011 all rights reserved theory and design. Softrock lite ii combined receiver kit bill of material circuit board 1 softrock lite ii circuit board ics 1 78l05 1 fst3253 1 lt6231 1 74ac74 crystals 1 7. A crystal oscillator with dividers operating at 4 or 8 times the centre frequency provides quadrature local oscillator drive to the mixers. All smt components are mounted on the bottom of the board. Where relevant, softchoice can expand the analysis so. The si5351a is an interesting device that was designed as a substitute for crystal oscillator clocks for any three frequencies between 8 khz and 150 mhz. There is a separate manual for com profibus, which is shipped together with com profibus on cdrom. Fst3253 datasheet, pinout,application circuits dual 4.
They can be accidentally launched by a shaky hand and a bad set of tweezers. Describe your experience with the softrock qrp kit radio and tell us why you give it the rating you did required. Some examples of engineering works in soft rock or in soft ground are added, with emphasis on their types of problems and solutions. Softrock sdr tlv2462d 0deg,180deg,90deg,270deg fst3253 mixser. Club members and also visitors from some local radio clubs were. The original notes were compiled into a pdf file by philippe f6czv for those. The si5351a is an interesting device that was designed as a substitute for crystal. Bill of materials for softrock v6, 40m80m 10, 14w, 1%. The two outputs of the fst3253 are integrated by two op amps to form audio i and q. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Setting it up as a suitable wspr transmitter seemed quite difficult, until came across some settings. The following is a list of notable soft rock bands and artists and their most notable soft rock songs. This circuit is a tayloe or quadratue sampling detector.
Outside the plant, the pdas switch seamlessly to a cellphone network to keep the operators connected. It employs clean, highly polished production values and arrangements, often led by piano andor acoustic guitar, aided by bouncy, harmonious bass guitar and with smooth, restrained use of electric guitar. The softrock lite ii, the sequel to the sr lite v6. Com profibus is therefore no longer described in this manual. Design manual engineering properties of soil and rock. The entire facility is covered by a few wifi access points so roving operators can use pdas to monitor activities.
A brief discussion of the problems and issues that needed to be. U5, max4489 soic 8 device, is located near the edge of the pcb. First of all, there is the precision installation of rock to safeguard the integrity of subsea pipelines. Jan 09, 20 the softrock lite ii, the sequel to the sr lite v6. It expands as it sets and locks into the surrounding concrete. The sb live would need a modification with 10v supply voltage on the opamp so the softrock could deliver a twice as high output signal. Fst3253, an soic 16 device, is located under where t1 mounds on the board top side.
Elecrafts kx2, kx3 using the si5351a, softrock, mchf, etc transceivers using the si570, and. Soft rock bolting guide introduction this guide is focussed on placing anchors in typical soft blue mountains sandstone. The softrock rxtx ensemble transceiver kit provides a 1 watt sdr transceiver that can be built for one of the following five band groups. Soft rock is a style of light, melodic, radiofriendly rock music which gained huge commercial success in the 1970s. Previously i designed amplifiers to produce 1520w of rf power from less than 0. The rxtx ensemble is a sdr transceiver with a 1 w pep max in ssb. Soft rock mechanics and engineering milton kanji springer. Pdf soft rock is a term that usually refers to a rock material with a uniaxial compressive strength ucs less than 20 mpa. Project introduction general the softrock lite ii, the sequel to the sr lite v6. The gain of the opamps place the noise floor at 142 dbchz. Softrock rx ensemble ii lf receiver kit bill of material 1. Revised 121611 warranty noticeread carefully conditions of sale specchem offers this product for sale subject to and limited by the warranty which may only be varied by written agreement of a duly authorized corporate officer of.
Fst3253 8 channel rf switch used in softrock for band switching. Though soft systems methodology attempts to encompass the subjective views of those in the real world, these. Fst3253, soic16 u4 1 tlv2462cd u5 1 transistors used where quantity 2n3904, to92 q1 1 2n3906, to92 q2 1 diodes used where quantity 1n4003 d1 1 xtal used where quantity 28. Output samples are at 0o, 90 o, 180 o and 270 o relative to the input signal. The i and q mixer outputs are buffered and fed to the pc soundcard inputs. Soft rock songs have a mesmerizing quality that captivates listeners. The rock strength is well below most other climbing areas, and requires different techniques. In general, pin 1 on an ic device is at the lower left corner when the ic is viewed with the text on the ic topside reading upright from left to right. I wanted to experiment using a fst3253 mixer when i noticed that offered a complete softrock lite ii receiver kit based around the fst3253 for. Mic inputs are usually mono, older laptops may only have mono inputs. Newer laptops often do have stereo inputs a list started further down. The resistors and capacitors are very small and extremely lightweight. The 9v1al motherboard mobo is a plugin addition to the softrock rxtx v. This is one package pinout of fst3253,if you need more pinouts please download fst3253s pdf datasheet.
A series of test were performed as part of steve hawkshaws thesis, and this document borrows heavily from that testing and analysis. Hdsdr if panoramic display with conventional receiver or. John r hudson 26th november 20 theideaofasoftsystemsmethodologyssmwasdevelopedbypetercheckland,professor ofsystemsatlancasteruniversitycheckland,1999. The term soft rock has become broad based over the years. Pin compatible with qs3253, fst3253, cbt3253 popular packages. Standard test method for determination of thermal conductivity of soil and soft rock by thermal needle probe procedure1 this standard is issued under the. Tlv2462d 0deg,180deg,90deg,270deg lo si57074ac74 rfpsn fst3253 mixser bs1702 fet amp i q softrock sdr 10u c1 c15 0. A softwaredefined radio for the masses, part 3 by gerald youngblood, ac5og learn how to use dsp to make the pc soundcard interface from part 2 into a functional softwaredefined radio. Softrock rx ensemble ii lf receiver kit bill of material circuit board 1 softrock rx ensemble ii circuit board icsfirmware 1 si570 1 78l05 3 fst3253 1 lt6231 2 74ac74 1 lp2992aim53. The original softrock mixer is single balanced, but flexradio use a balanced design. Know your network is ready with the network readiness. Fst3253, soic16 u4 1 opa2228ua or ltc6241ic8 or max4489asa, so8 u5 1 transistors used where quantity 2n3904, to92 q1 1 2n3906, to92 q2 1 diodes used where quantity 1n4003 d1 1 xtal used where quantity 28.
On reading about the softrock kits i reasoned that if i could set the device to work at the centre of the 9mhz 1st if in my ft301 receiver, i would be able tune to any frequency and still get the advantages of the sdr software. We also explore a powerful filtering technique called fft fastconvolution filtering. Description typical test data specrock is a onecomponent, waterproof, non shrinking, portland cementbased anchoring cement that sets hard in 1215 minutes. The observational method or back analysis can be used to determine engineering properties of soil or rock in cases where slope failures occur, or where embankment settlement or excessive settlement of existing structures have been observed. Targeted at soft rock project builders, though adaptable to boost other qrp or homebrew rigs to the 1520w level. The softrock is designed for a soundcard that saturates at 2. It employs clean, highly polished production values and arrangements, often led by piano andor acoustic guitar, aided by bouncy, harmonious bass guitar and with smooth, restrained use of. P art 11of this series provided a general description of digital. This list should not include artists whose main style of music is anything other than soft rock, even if they have released one or more songs that fall under the soft rock genre. Given below is the rational for deciding the energy bands and their associated effective energy monoenergy used for exposure maps, etc. Needless to say, soft rock beginnings will never end. Bill of materials for softrock v6, 40m80m 10, 14w, 1% r1. Softrock sdr tlv2462d 0deg,180deg,90deg,270deg fst3253.