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Boat Forum / Electronics / April 2004ICOM m810 open up for ham bands?
I'm looking for any info as to how I can have my ICOM m810 radio opened up to allow access to the ham bands. Any information would be greatly appreciated. Many thanks, Carl. What's an M810? Icom makes a 710 and an 802 but I've never heard of an 810. Rusty O It's similar to the 802 - but an earlier version. I must admit to being somewhat baffled by ICOM's model numbering policy. I found a post on how to open up the ham bands for the 802 unfortunately it doesn't work for the 810. Any ICOM dealer can do the mod for you. Last I recall it costs maybe $75. Doug s/v Callista > I'm looking for any info as to how I can have my ICOM m810 radio > opened up to allow access to the ham bands. [quoted text clipped - 4 lines] > > Carl. Scott Malcom of MTS very graciously supplied me with a PDF of the instructions to open up the ham bands on the ICOM 800 and 810 models. This required the snipping of three wires and was a ten minute job. I can confirm that this worked for me. Many thanks Scott. Carl. I'm not familiar with the 810. Must be very old. I have an M710 and all it required is to download a software upgrade into the rig. No snipping of jumper or diodes. Doug, k3qt s/v Callista > Scott Malcom of MTS very graciously supplied me with a PDF of the > instructions to open up the ham bands on the ICOM 800 and 810 models. [quoted text clipped - 4 lines] > > Carl. Do you have a valid amateur radio license to use it that way? > I'm looking for any info as to how I can have my ICOM m810 radio > opened up to allow access to the ham bands. [quoted text clipped - 4 lines] > > Carl. Doesn't matter. All rules are suspended in an emergency. Having a ham enabled rig on board is a good idea even if one does not have a ham license. Much better chance of reaching a ham than anyone on Marine SSB in an emergency, Doug, k3qt s/v Callista > Do you have a valid amateur radio license to use it that way? > > I'm looking for any info as to how I can have my ICOM m810 radio [quoted text clipped - 5 lines] > > > > Carl. > Doesn't matter. All rules are suspended in an emergency. Having > a ham enabled rig on board is a good idea even if one does not [quoted text clipped - 3 lines] > Doug, k3qt > s/v Callista You can even run more than 25W on VHF to get over the noise of Bubba's Marina parking boats running 25W from his 90' tower, in an emergency. My boats have all had a 160W linear amp, made for 2 meters but broadbanded, in them for years.... Marinas should all be limited to 1/2 watt from an antenna no taller than the top of the fuel dock house.....dammit.... I almost bought a 100W amp for marine VHF when I was in the Bahamas. They are legal there but they wants way too much money for it. Didn't seem to have a RX preamp so it seemed to me that talking to folks that I couldn't hear wasn't worth it Doug s/v Callista > > Doesn't matter. All rules are suspended in an emergency. Having > > a ham enabled rig on board is a good idea even if one does not [quoted text clipped - 11 lines] > Marinas should all be limited to 1/2 watt from an antenna no taller than > the top of the fuel dock house.....dammit.... Jim, I have a valid license. An interesting aside is that the antenna tuner (in my case an at130) needs to briefly transmit in order to tune to the correct frequency. This brief transmission (activated when the tune button is depressed) was also blocked. So even though it's legal to listen on these bands you can never tune the antenna. Carl. > Do you have a valid amateur radio license to use it that way? > > I'm looking for any info as to how I can have my ICOM m810 radio [quoted text clipped - 5 lines] > > > > Carl. But only outputs a few milliwatts when tuning I believe. But you do still need a valid license to work QRP. Doug, k3qt s/v Callista > Jim, > [quoted text clipped - 17 lines] > > > > > > Carl. > But only outputs a few milliwatts when tuning I believe. But > you do still need a valid license to work QRP. > > Doug, k3qt > s/v Callista Autotuners need about 3 to 5 watts of RF at the input to the tuner for the internal Phase and Power Sensing Systems to operate correctly. Bruce in alaska  Signatureadd a <2> before @ Bruce in Alaska <bruceg@btpost.net> wrote in news:bruceg- BCB11B.10462624042004@netnews.worldnet.att.net: >> But only outputs a few milliwatts when tuning I believe. But >> you do still need a valid license to work QRP. [quoted text clipped - 5 lines] > for the internal Phase and Power Sensing Systems to operate > correctly. Tuners get all excited if you tune them up at a kilowatt....(c; Larry W4CSC > Bruce in Alaska <bruceg@btpost.net> wrote in news:bruceg- > BCB11B.10462624042004@netnews.worldnet.att.net: [quoted text clipped - 12 lines] > > Larry W4CSC Yep, if you do that, the "Magic Smoke" comes out and they don't work right anymore. It isn't easy to put the smoke back in either. Bruce in alaska Signatureadd a <2> before @ Bruce in Alaska <bruceg@btpost.net> wrote in news:bruceg- 292A33.09312325042004@netnews.worldnet.att.net: > Yep, if you do that, the "Magic Smoke" comes out and they don't > work right anymore. It isn't easy to put the smoke back in either. > > Bruce in alaska I have never seen anyone successful at pumping the "Magic Smoke" back into any electronic component or cabinet, however many have tried in vain....(c; "Magic Smoke" is much more impressive in transmitters over 10 KW, don't you agree? Larry POWER IS OUR FRIEND! > Bruce in Alaska <bruceg@btpost.net> wrote in news:bruceg- > 292A33.09312325042004@netnews.worldnet.att.net: [quoted text clipped - 12 lines] > Larry > POWER IS OUR FRIEND! Had a Gates 15Kw FM take a dump, from over the hill Power Tubes going flat at 2AM in the snow. Back of the Cabinet was outside building with the front inside. When I arrived, with the consulting engineer, we found "Smoking Holes in the snow" where the final parts had been thrown, and melted down thru the snow. This was a NON-Profit, noncommercial, that used handmedown finals from the local Tv Station Modulator, and when they went south they did it in an "Exlosive" fashion. It took us 6 hours to rebuild all the "Plumbing" and get back on the air with the next set of "Overtime Tubes". One of my many "Broadcast Stories" from when I was a kid. Bruce in alaska Signatureadd a <2> before @ > Had a Gates 15Kw FM take a dump, from over the hill Power Tubes going > flat at 2AM in the snow. Back of the Cabinet was outside building [quoted text clipped - 8 lines] > > Bruce in alaska One of my friends, and a great RF technician, just took a job with the local Fox UHF station, the most powerful (5MW ERP) broadcast transmitter in SC. It's a big RCA with two 8' tall boiler klystrons putting out something like 180KW into 6" rigid up the tower with the usual diplexer. They "run it until it blows" because the klystrons are amazingly expensive, something like 30 Grand each. The tubes they have are all WAY over their MTBF hours and they keep cranking up juice on them to keep them within output tolerance. I don't wanna be anywhere near the beasts when the focus magnets finally open and the beam through the cavities at 25KV at 10 amps comes.....well.....unfocused on the copper block collector....(c; Larry He's already experienced some amazing flashovers and brought me some souvenir ceramic insulators from the big power supply....(c; I have had a tour of the transmitters and antennas at US Navy transmitter site at Cutler, Maine where they run up to 3 MW output power at 17.6 KHz. They replace elements in the tubes and pump the vacuum back down. The helix coils at the antenna feed are massive. When ice starts to load down an antenna array, they put AC power through the antenna to ground so the antenna wire heats up and sheds ice. Doug K7ABX > > Had a Gates 15Kw FM take a dump, from over the hill Power Tubes going > > flat at 2AM in the snow. Back of the Cabinet was outside building [quoted text clipped - 26 lines] > He's already experienced some amazing flashovers and brought me some > souvenir ceramic insulators from the big power supply....(c; > I have had a tour of the transmitters and antennas at US Navy > transmitter site at Cutler, Maine where they run up to 3 MW output [quoted text clipped - 3 lines] > through the antenna to ground so the antenna wire heats up and sheds > ice. Doug K7ABX If you are ever near Ft Collins, Colorado, go bang on the front door of NIST's WWV time stations, the frequency and time references for the world. Those guys love to take techie touristas on a nickel tour of the plant. WWVB on 60 Khz isn't as exciting as it was in the old days when they had the massive antennas, though. Their 60 Khz antennas are more modern now and don't flashover near as excitingly as they once did. http://www.boulder.nist.gov/timefreq/stations/wwvb.htm No, Gary, they don't have 1250 meter towers, which is the ELECTRICAL length of 60 Khz 1/4 wave. They use loading so the electrical length is 5000 meters on towers with a PHYSICAL length of only 125 meters. The capacitor hat is HUGE! They use three 38KW transmitters to get 50KW ERP from 3 phased antennas with about 57% efficiency. This greatly reduces the electrical stresses on very high powered helix houses like Cutler's. Hee hee....we should send Gary Shafer to Cutler so he can learn about the electrical length of an antenna being different from the physical length of an antenna with loading coils and capacitor hats....(c; The electrical length at that freq is a hair over 5 miles for a simple dipole...(c; You should see the rhombic antennas at NW Cape, Australia the Navy has run for years near Canarvon. The locals are so afraid of the flashovers they won't go anywhere near them!...(c; Larry W4CSC POWER IS OUR FRIEND! >> I have had a tour of the transmitters and antennas at US Navy >> transmitter site at Cutler, Maine where they run up to 3 MW output [quoted text clipped - 29 lines] >Larry W4CSC >POWER IS OUR FRIEND! I see you still haven't read any basic AC theory yet. Ask them what the radiation resistance of those antennas are. :>) No Larry, the coil still doesn't tune the antenna or make it any longer. It just cancels out the reactance of the antenna. Regards Gary Who is still trying to get Larry to open a book. Larry, The US Navy pulled out of NW Cape years ago. It is manned entirely by Australian forces since about 1980. The US techs there took a lot of teasing about being replaced by Australian females. NW Cape was on of our terminating points when I was on Diego Garcia in 1979-80. Great DX as VQ9DM. Doug K7ABX > You should see the rhombic antennas at NW Cape, Australia the Navy has run > for years near Canarvon. The locals are so afraid of the flashovers they > won't go anywhere near them!...(c; > > Larry W4CSC > POWER IS OUR FRIEND! > Larry, > The US Navy pulled out of NW Cape years ago. It is manned entirely by > Australian forces since about 1980. The US techs there took a lot of > teasing about being replaced by Australian females. NW Cape was on of > our terminating points when I was on Diego Garcia in 1979-80. Great DX > as VQ9DM. Doug K7ABX Oh, oh....I've exposed my age, again....hee hee. Most of the sailors were glad to go home....(c; > Jim, > [quoted text clipped - 7 lines] > > Carl. Callsign: KG6TOU Class: Technician Codes: HAI USA Name: Carl S Midson Addr1: 4712 Admiralty Way 151 Addr2: Marina Del Rey, CA 90292 (I bet Carl DOESN'T live in a trailer park.) Country: USA Effective: 26 Jan 2004 Expires: 26 Jan 2014 FRN:0010270429 Is this you, Carl? If it is, you're gonna have to UPGRADE that Technician's license before you get on HF....(c; Congratulations, by the way, on passing your test! I've been a ham since I was 11 in...well, er, ah...1957. Hope you have half as much fun on ham radio as I have in the last 47 years. I was the FIRST ham to legally transmit the ASCII code the instant it was legalized in the 4th call area. 73, Larry W4CharlestonSouthCarolina (aka WN2IWH, WB4THE, KN4IM...all fine old calls) Just for info, anyone can find a hams information from the FCC or the website www.qrz.com. It's pub-lick. If you go to: http://www.qrz.com/detail/KG6TOU you can even get the map to Carl's house, and his coordinates for your GPS! Set a waypoint and surprise him some day!...(c; > 73, Larry W4CharlestonSouthCarolina > (aka WN2IWH, WB4THE, KN4IM...all fine old calls) How many years did you sit around waiting for the old W4CSC to die off? :-) SignatureGlenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com >> 73, Larry W4CharlestonSouthCarolina >> (aka WN2IWH, WB4THE, KN4IM...all fine old calls) > > How many years did you sit around waiting for the old W4CSC to die > off? :-) None, really. I was looking for a call to replace the FCC-generated AWFUL KN4IM. No more calls with N and/or M in them! Way too confusing on the air. WCSC is Channel 5 TV, here and I have a friend who works there. I thought it was neat that it was open. My other choice that was open wasn't an old-time W4 call, but N4SEX, which is also very neat. Well, I got the best one, Charleston's call....or Clemson or Conway or Cainhoy or Camden or Clinton, SC...(c; I had a nice golf shirt made up with W4CSC done in the same letter font as WCSC uses before the ham club was invited to tour the new WCSC broadcast facility and watch the local newscast live from behind the cameras. Everyone at the station got a big kick out of my shirt. I've been meaning to go take a nice picture of the front of the WCSC new building with the bottom of the big, widebase, radar tower looming over it. I want to morph a 4 into the WCSC over the front door and have that picture made up into color QSL cards like it's my ham station...(c; One of many projects that hasn't been completed.... Larry W4CSC The original W4CSC died 4 YEARS before I applied for the call. There's lots of fine old 1X3 original ham calls looking for a new home. I wouldn't trade it for A4A or W4A or W4DX, those fakey new calls.... |
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