Articles and reviews from Zach

TBL  Tropical Band List By Willi Passman  As you may  know  from the logs posted in this blog , mostof them are refered in he lower spectrum of the SW band ie below 7MHz This  part f the band is called tropical band  Why : http://www.pateplumaradio.com/genbroad/tropical.htm For me  this part of the shortwave spectrum  has a bigger interest thn  the remain part as in these bands you will find stations mostly of the tropical  part fo the  earth ie Africa and Americas (eap South) with signals of special interest to a more dedicated DXer (a person who listens  to more difficult signals then a common shortwave listener ) which can be heard  more particualryl  in late (local )afternoons to early mornings This  book  was edited  by Willi Passman  , in Germany,  till 2006 and covered  this need as a very good and handy A4 sized guide with updates  every 4 months I have...

Grove’s shortwave directory    And this is my last utility frequency guide! And it the oldest along the others (1993) and possibly not longer printed . And i cannot consider either as a rival of the KLingenrffuss  guide due to its unique design IN contrast to the other books  this ‘book’ has 4 peculiarities: - Size : its size  is A4, bound by 3 holes on the left for easy punching in dossier  - Modular :  each  chapter has its own page numbering .Possibly for changing only chapters  in case anupdate is available - Format and design : Utility  oriented. Each  chapter discusses each utility separately with its own frequencies and some minor information - More American oriented : All utilities are mostly  for American ute DXers though  there are also some sub-chapters for other countries Here is a short look of this rather ‘uncommon’ book :  ON preface there are  two communication sets of 34 a...

Ferrel’s confidential frequency  list  (1999) This was (or still is? I don’t know ) one of the major rivals of Klingenfuss frequency lists>This  edition is of 1999 and ws published  by Practical wireless an amateur radio magazine in UK and is possible the last as with a simple search on Google  shown  1998 as the latest As far as it is noticed. They had a cooperation with WUN (worldwide utility  network a mailing list and site related to utility  stations , quite known the older times as the best form  for these types of service on 90s + but later it was  defunct ) I think  that Klingenfuss  blames  rather  directly  this book and  this mailing list for fake and faint  entries This is a spiral bound  book with 450 pages with sheet that can be easily removed if someone not cares enough. The structure of this book is as  follows: Abbreviation list Frequency list  ...

Newness radio amateur and listeners  pocket book Steve Money This is a  pocket size book with all the basic information  (say rather as index )a radio amateur is required to know and was onw of my top reference books  for the older times I have been as a systematic radio listener (80’s? ) Its  size  is  just 7 x 15 cm and includes the following chapters : Radio freqs : band names, wavelength band names micro wave band designations CCITT regions , freq  allocations , emission designations , Amateur radio (licensing in USA , UK , examinations , Morse test , morse code  and timing , practice , amateur radio bands in UK  , UK amateur bands Fm simplex channels , repeaters  CB radio channels ) Digital communication , : radio teletype RTTY , Baudot code (the main code used for RTTY ) with diagram and analysis , control sequences as ZCZC , SITOR [simplex] and AMTOR [amateur RTTY ] , the ARQ mode [auto repeat ...

2005-2006     guide to utility  stations This a more recent edition   from the   Klingenfuss guide I use in my shack . This book has   still ca 600 pages of information but the paper used is quite thinner so that the total thickness   is only the   half of the previous edition This   edition   has several minor changes : Radio regulations   are with the previous   edition do not exist , or just several paragraphs are noticed The structure of the book   remains the same . Only modifications to the introductory   text as the technology has been   severely   changed (esp in the encoding types with more   complex systems ) as first   there was a decline of the   shortwave services There is a paragraph commenting on the total disinformation happened by rivals editions and the internet clubs and forums    with either plagiarized material or even phantom freq...

Klingenfuss utility guide 1999 And once again something different YOU surely know that   I am a keen   radio listener. However you possibly don’t know   that   the older times I was also a keen listener of utility radio stations! That happened   on mid 90s to mid 00’s . and more interested during the time of the war in Serbia. I was using a   Philips   2395   radio   (having BFO to tune ) together   with a Spectrum micro computer   and an interface connected on the rear of Spectrum that   did the decoding of various digital   transmissions   of that time . What is utility radio station? This kind of station is a transmission   normally not intended to the general public as   the transmissions are aimed to   communications. These’re the following categories UC 1: Time Signal Stations, Space Stations and the Aero Section UC 2: PTP Stations UC 3: Maritime Stations UC ...

2005 -6   Klingenfuss Shortwave Frequency Guide,   And this   will be the third book   for review   from this publisher This   book   covers   full listing from all over the shortwave radio spectrum . There is an introduction which is carbon copy from the   utility   guide book (monitoring utility stations ) The first part covers   the utility transmissions. The frequency listing   seems   identical   with the previous book , with some minor differences : 9 columns instead of 4 and smaller font (8 picas instead of 10 ) to   include in 161 pages On the second part (shortwave radio ) there is a introductory text with an extensive reference   to DRM   with emphasis   to the latest for that time   products and a comprehensive   frequency listing   of DRM transmissions The frequency listing of 150 pages uses again smaller fonts (8 picas )a...

SINPFEMO ------------- A better signal tech analysis by using F/TDM analysis drawings in specialized reports (version blogger ) Considering that SINPFEMO does not 100 % cover the truth from listeners point of view in regards to signal readability QRM and fading I have used for more than 4 years derived from more specialized monitoring equipment such as Hewlett Packard , Rohde & Shwartz etc I think however that both terms shown below are very easy to understand however there is still a little analysis behind them on how i used them so far. #1. Frequency domain analysis ...................#1b. About computer DSP analysis on FDM #2. Time domain analysis ( fading analysis) ...................#2a.Cases of 'Short' time fading found on SW: ...................#2b.Cases of long term fadings #3. More advanced way for domain analysis #4 Using R75 and specialized programs New.gif (908 bytes) ....................#4a Smart Icom 32 and R75 ....................#4...

Notice: this is an article I published last year in Greek about the American digital radio in a greek web site. The theme is also on the page: http://zlgr.multiply.com/reviews/item/27 HDFM – HD radio Η αντιπρόταση το ψηφιακού ραδιόφωνου στην ΗΠΑ Το HD radio σχεδιάστηκε σαν μια επέκταση της υπάρχουσας τεχνολογίας ετσι ώστε να είναι απολύτως συμβατή με τα σημερινά ραδιόφωνα AM και FM και να προσφέρει πέρα από την υψηλή ποιότητα ήχου εφάμιλλη με τα CD την ικανότητα να ανθίσταται σε περιπτώσει ανωμαλίας της διάδοσης από ανακλάσεις (πχ σε βουνα όταν πχ χρησιμοποιείται στα αυτοκίνητα το σήματα να ακούγεται πάντα σαν να ήταν δηλ σταθερό ) Αυτή ήταν από την αρχή η φιλοσοφία το HD. Το σχεδιασμό και την μελέτη ανέλαβε η εταιρία Ιbiquity , προϊόν συγχώνευσης των εταιριών Lucent (εταιρία που ασχολείται και με δορυφορικά συστήματα εκπομπής ) και της Westinghouse Οι περισσότεροι μεταφράζουν τον όρο HD σε High Definition. Αντίθετα η εταιρία Ibiquity επεξηγεί ότι το HD σημαίνει hybrid digital (υβριδι...