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#1
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In article ,
"Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote: I believe that most newer ham rigs are now type accepted for Marine SSB use. I know that the SGC SG-2000 was the only one for a long time but I'm pretty sure there are others. Not sure about the IC-751 specifically. Easy enough to find out though. Doug, k3qt Actually, that is not the case. The SG-2000 was a commercial MF/HF Radio that some hams actually got conned into buying. "Peeair" still can't design HIS way out of a wet paper bag. I can't think of ONE radio sold into the Ham market, that is TYPE ACCEPTED for commercial use. The design criteria is different for commercial radios, and to be TYPE ACCEPTED they can't have a Continious Tuning VFO type operational system. Me |
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#2
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"Me" wrote in message ... In article , "Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote: I believe that most newer ham rigs are now type accepted for Marine SSB use. I know that the SGC SG-2000 was the only one for a long time but I'm pretty sure there are others. Not sure about the IC-751 specifically. Easy enough to find out though. Doug, k3qt Actually, that is not the case. The SG-2000 was a commercial MF/HF Radio that some hams actually got conned into buying. "Peeair" still can't design HIS way out of a wet paper bag. I can't think of ONE radio sold into the Ham market, that is TYPE ACCEPTED for commercial use. The design criteria is different for commercial radios, and to be TYPE ACCEPTED they can't have a Continious Tuning VFO type operational system. I know what it means. Perhaps someone else has a definitive answer but I'm sure that someone in a position to know confirmed that some ham rigs are type accepted. May have been an ICOM rep at one of the boat shows. I seem to remember that the rationale was that digital synthesized rigs are plenty stable enough to be relied upon to openate on frequency. Me |
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#3
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In article ,
"Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote: I seem to remember that the rationale was that digital synthesized rigs are plenty stable enough to be relied upon to openate on frequency. That's not the point at all. It is, that commercial Type Accepted radios are all channelized frequencies as specified by the ITU, and therefore the frequency control system must be channelized with just ITU Frequencies avalable for selection, in order to meet Type Acceptance. That is just one of the technical differences between the two radio types. Stability hasn't been the issue for about 10 years. IMD on the otherhand IS a very big issue for Type Acceptance, and most Ham type radios can't meet the IMD spec, or even get in the same ballpark. Me |
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#4
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#5
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Hello Larry,
You might want to qualify that statement. Ham rigs tend to use finer tuning steps in their VFOs than type-accepted marine radios (with the general frequency transmit option) use in their VFOs, but it is just a matter of degree. Both radios technically have VFOs that allow them to tune between channels. As you know, there is absolutely nothing in an "open", type-accepted Icom marine transceiver that would prevent anyone from transmitting on any frequency covered by the radio. And of course, there is the SGC 2000. We probably need a more carefully worded statement of just what type acceptance means in this regard (VFOs). Or are you suggesting that "open" versions of the type-accepted marine radios are no longer type-accepted? Regards, Chuck Larry W4CSC wrote: No radio with a VFO will get type acceptance for commercial use. It's how the FCC keeps unqualified, non-technical operators away from other services..... |
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#6
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My ICOM-M710 can be tuned off frequency on the Marine SSB
channels. Not sure why that might be type accepted but a ham rig doing the same thing is not. That's the general logic from the folks that told me that many hams rigs are essentually type accepted. Doug, k3qt s/v Callista "chuck" wrote in message ... Hello Larry, You might want to qualify that statement. Ham rigs tend to use finer tuning steps in their VFOs than type-accepted marine radios (with the general frequency transmit option) use in their VFOs, but it is just a matter of degree. Both radios technically have VFOs that allow them to tune between channels. As you know, there is absolutely nothing in an "open", type-accepted Icom marine transceiver that would prevent anyone from transmitting on any frequency covered by the radio. And of course, there is the SGC 2000. We probably need a more carefully worded statement of just what type acceptance means in this regard (VFOs). Or are you suggesting that "open" versions of the type-accepted marine radios are no longer type-accepted? Regards, Chuck Larry W4CSC wrote: No radio with a VFO will get type acceptance for commercial use. It's how the FCC keeps unqualified, non-technical operators away from other services..... |
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#7
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In article ,
"Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote: My ICOM-M710 can be tuned off frequency on the Marine SSB channels. Not sure why that might be type accepted but a ham rig doing the same thing is not. That's the general logic from the folks that told me that many hams rigs are essentually type accepted. Doug, k3qt s/v Callista Type Acceptance is a "Legal Designation" that states that this particular Radio Model has passed the required Testing and Design Criteria to meet that requirement. This is done by the OEM, and they submit the results of that testing, along with two actual production Radios to the "Office of the Chief Engineer" for testing in his Lab. "essentually type accepted" is an OEM's cop-out, for I don't want to spend the MONEY it would take to get this model into compliance, and so I just sell it into a non-Type Acceptance market, and save myself the grief of proving that the radio is as good as I say it is. Yea, there are a lot of the "Type Acceptance" spec that most ham radios can pass, with no problem, but there are a few important ones that they just can't make, because they aren't designed to make that spec. IMD is one of these Biggies. Operational Control Design is another requirement that keeps these ham radios from being acceptable. Bruce in alaska -- add a 2 before @ |
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#8
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In article , chuck
wrote: We probably need a more carefully worded statement of just what type acceptance means in this regard (VFOs). Or are you suggesting that "open" versions of the type-accepted marine radios are no longer type-accepted? Regards, Chuck Yes I am stating that as a "Fact", that "opened" versions of "Type Accepted" Radios are not still Type Accepted. The owner, or operator, is not allowed to change ANY Major Operational Charactoristic of a "Type Accepted" radio and still have a "Valid Claim" of Type Acceptance. This is so stated in the FCC's Rules that detail what is allowed and what spec's are required to meet "Type Acceptance" by the FCC Chief Engineer, and his Lab. Just doing the required testing of a radio, takes a couple of months, for MF/HF SSB Radios, and that doesn't include any Modifications required to get the radio into compliance. Been there, Done that, and it AIN't EASY........ Bruce in alaska who has worked BOTH sides of this issue...... -- add a 2 before @ |
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#9
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Hello Bruce,
Don't mean to be picking but I'd like to be very clear on this. Are you saying that all of the owners of "open" Icom "type accepted" radios who operate these radios on marine frequencies are operating illegally because the radios are "open"? Are you certain that the type acceptance does not include an open version? Is the SGC 2000 being sold in violation of the law then? Appreciate the info, Bruce. Regards, Chuck Bruce in Alaska wrote: In article , chuck wrote: We probably need a more carefully worded statement of just what type acceptance means in this regard (VFOs). Or are you suggesting that "open" versions of the type-accepted marine radios are no longer type-accepted? Regards, Chuck Yes I am stating that as a "Fact", that "opened" versions of "Type Accepted" Radios are not still Type Accepted. The owner, or operator, is not allowed to change ANY Major Operational Charactoristic of a "Type Accepted" radio and still have a "Valid Claim" of Type Acceptance. This is so stated in the FCC's Rules that detail what is allowed and what spec's are required to meet "Type Acceptance" by the FCC Chief Engineer, and his Lab. Just doing the required testing of a radio, takes a couple of months, for MF/HF SSB Radios, and that doesn't include any Modifications required to get the radio into compliance. Been there, Done that, and it AIN't EASY........ Bruce in alaska who has worked BOTH sides of this issue...... |
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#10
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chuck wrote in :
And of course, there is the SGC 2000. Yeah, but SGC doesn't count because you can't keep one of them out of the shop long enough to be a problem....(c; Just stirring the pot. Every one I've seen just sucked. |
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