FMTV with IC-905  in PAL standard region  - Page 1
Forum section: electronics / rf-microwave

author: oe7dbhnew
author_rank: Contributor
timestamp: November 01, 2024, 02:41:40 pm
content: my experiences and my disappointment.....The fact is:IC905 works well with IC905, but only partially works with other devices.ICOM currently has its own video transmission standard - similar to COMTECH back then.The scope of delivery is also not complete: you buy a TRX that costs 4000 euros and the special video-audio cables are not included !!!They are also difficult to obtain because they have a special pin assignment.If this condition remains with FMTV modulation ?? , and:1. you live in an area with PAL television standard2. you want to buy this device specifically because of FMTV modulation on all bands 23cm....3cm.....i recommend that you do not buy IC-905, otherwise you will be disappointed like i was.Link to testreport in original......https://oe7dbh.blogspot.com/2024/09/ic-905-uhf-shf-multiband-multimode.html

author: oe7dbhnew
author_rank: Contributor
timestamp: November 12, 2024, 03:44:05 pm
content: Who knows, maybe I got the NTSC version despite buying it in Austria (Europe - PAL region) ? ---> this is just speculation and guesswork.The fact is that my IC-905 as it is currently is not suitable for the PAL standard as far as color is concerned.From the conversation with Icom Europe it turns out that there is only one IC-905 hardware version.In general it is very difficult to get the important information from ICOM.I already informed Icom Europe in October 2023 that there was a problem with FMTV modulation.After several emails with ICOM Europe and ICOM Japan, only the software video hub limitation was removed inversion 1.5 , but no other changes were made.If there are two or more hardware versions ? , ICOM has the serial number of my device and will certainly seethat I have an unsuitable device for my PAL area.I have also forwarded my measurements to ICOM Europe and received answers like this:08.2024.Sehr geehrter Herr Banko,vielen Dank für die Analyse.Unsere Ingenieure sind sicher sehr überrascht von den sehr konkreten Eingaben und versuchen das Beste daraus zu machen.Fehlende Eingangsimpedanzen kann man bei ausgelieferten Geräten nicht mehr nachinstallieren.Jedoch alles, was mit Software Verbesserungen gemacht werden kann, wird sicher gemacht werden.Dazu tragen die einzelnen Eingaben bei, welche von den Benutzern, wie Ihnen kommen.Dear Mr. Banko,Thank you for the analysis.Our engineers are certainly very surprised by the very specific inputs and are trying to make the best of them.Missing input impedances cannot be retrofitted to delivered devices.However, everything that can be improved with software will certainly be done.The individual inputs that come from users like you contribute to this.10.2024.Lieber Darko,vielen Dank für deine sehr detailreiche Schilderung.Gerne habe ich deine ausführliche Demonstration an unsere Ingenieure in Japan weitergeleitet.Bleibt zu hoffen, dass es unsere Ingenieure schaffen, die erforderliche Bandbreite überzeugend zu implementieren.Dear Darko,Thank you very much for your very detailed description.I was happy to forward your detailed demonstration to our engineers in Japan.We can only hope that our engineers will manage to implement the required bandwidth convincingly.These are the answers from ICOM Europe !! , .....hope dies last.I have not received a response from ICOM Japan, despite several emails in English and Japanese.PAL Video standard area....I would be very grateful if one of the readers of this forum would do the same test on 1265MHz with their IC-905 , just for comparison.1. with FMTV TX transmit -----> IC-905 receiveda. with PAL camera ( Composite - FBAS output 1Vpp )b. with Multiburst signal 1Vpp2. with IC-905 transmit ------> FM TV consumer Receiver receiveda. with PAL camera ( Composite - FBAS output 1Vpp )b. with Multiburst signal 1Vpp3. with IC-905 transmit ----> with IC-905 receiveda. with Multiburst signal 1VppMissing or incorrect pre-emphasis and 75 ohm impedance:Yes, that's not quite right but it is possible to improve it from the outside without interfering with the inside of the IC-905 device.Pre-emphasis function would certainly be possible to change to the correct value with software.Video 75ohm impedance can be coordinated from the outside.But in software a wrongly set low pass frequency range is not adjustable by us as a consumer !!!.ICOM could also supply the correct 75ohm impedance, already built into the Audio-Video cable that we missed in the delivery ?.https://oe7dbh.blogspot.com/2024/09/ic-905-uhf-shf-multiband-multimode.htmlWe are talking about a device costing over 4000 euros, ( for some people that is 3 months salary ) ( and not a Chinese device costing around 200~400 euros )everything should work properly before the market launch, and all necessary accessories too. China devices have more accessories in delivery.Actually, it should be in ICOM's own interest to keep its customers happy.Or am I wrong with my claims?

author: oe7dbhnew
author_rank: Contributor
timestamp: November 20, 2024, 07:00:28 pm
content: There is a partial success on this IC-905 FMTV topic.....I received an email from ICOM Europe :Please try a factory reset as per the manual. The IC-905 is a computer with analog interfaces, so stored values ​​can sometimes be changed.https://forum.batc.org.uk/viewtopic.php?f=2&p=36884#p36882