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Type: Posts; User: k7mem

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  1. Replies
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    133

    The Retevis RT81 covers a range from 400 to 470...

    The Retevis RT81 covers a range from 400 to 470 MHz. The range from 420 to 450 MHz is a Amateur Radio band, however it is shared for business use.

    For information on portable radios for business...
  2. I am assuming, like Tempstar, that you are...

    I am assuming, like Tempstar, that you are looking for a VHF/UHF Multi-Band antenna. The Comet GP-6 will work just fine, at any height. I have a Diamond X30A Dual-Band (2M/70CM) Base/Repeater...
  3. Thread: Amateur Rookie

    by k7mem
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    187

    Well, here is your first lesson. "73" is not...

    Well, here is your first lesson. "73" is not plural. "73" is an old telegraph code that means "best regards", or something to that effect. It doesn't need to be pluralized. The same is true with the...
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    Base Radios Not quite true. An Amateur Radio license...

    Not quite true.

    An Amateur Radio license allows you to engage in two way communication with other radio amateurs and only on specific frequency bands. One way communication, like broadcasting...
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    The FT-60 looks like a descent hand held. I have...

    The FT-60 looks like a descent hand held. I have several 2M/440MHz "under the dash" type of radios (Kenwood TM-201B and a TM-V7). The "under the dash" type of radio generally costs considerably more...
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    Base Radios Try not to worry about the missing posts. That...

    Try not to worry about the missing posts. That same thing happened to me, when I first joined. My first 2 or 3 posts never happened. When you first join the group, your posts have to be vetted by the...
  7. Kantronics is still in business and selling...

    Kantronics is still in business and selling updated modems. Also, reconditioned "BBC B Microcomputers" are still available on Ebay. But their price is on par with a new one of the day. You should be...
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    Base Radios The "Blue Dot Kiwa" filter that you are referring...

    The "Blue Dot Kiwa" filter that you are referring to is actually specified wider than the stock filter. The stock filter spec is 6 KHz/-6 dB and theirs is 6.8 KHz/-6 dB. Their claim is that the stock...
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    Rob has the right idea. That jumper on the...

    Rob has the right idea.

    That jumper on the back went bad on my IC-735. You could move it around and the sound would come and go. I just made up a new jumper and never had any more problems.
  10. Replies
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    Base Radios I found the schematic for the Alinco DX-R8T on...

    I found the schematic for the Alinco DX-R8T on mods.dk. But I don't know how much help that is going to be.

    The filters are shown on the last page of the schematic, bottom right. The part number...
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    Eye hooks, latches, nails, etc. should have no...

    Eye hooks, latches, nails, etc. should have no effect on your antennas performance. You might have an issue if the fence got wet, but that's it. That doesn't mean the antenna is going to be a big...
  12. Well, I have a Hustler 5BTV that I have mounted...

    Well, I have a Hustler 5BTV that I have mounted at the top of a 18 foot section of 2 inch iron pipe. Except for the run in I had with a bolt of lightening, it works great. I lost the 80 Meter...
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    Welcome aboard, from Northern Arizona. With a...

    Welcome aboard, from Northern Arizona.

    With a Foundation license, I am guessing that you are in England or Australia. Both have a Foundation license, but I don't think they are the same.

    The...
  14. Thread: storage space

    by k7mem
    Replies
    3
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    414

    Once you start coding, the language doesn't...

    Once you start coding, the language doesn't matter much. However, there are some languages that are better suited then others, depending on the project. For example, if your were trying to manage a...
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    Mobile Radios JDT, I have a IC-735. The intended microphone...

    JDT,

    I have a IC-735. The intended microphone is the HM-12 or SM-8, but I use the SM-2 desk microphone or sometimes my D-104. Both of which are amplified.

    The wiring of the microphone for the...
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    You might be interested in this web page on...

    You might be interested in this web page on Common-mode chokes by G3TXQ. He seems to have the same interest as you and he could explain it better than I could. At the bottom of the page G3TXQ...
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    Welcome aboard. It's always nice to hear from...

    Welcome aboard. It's always nice to hear from someone new.

    But your post brings up a lot of questions. First, what antenna are you using?

    What bands is it tuned for? Do you know how to check if...
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    I looked through the FT-857D manual and service...

    I looked through the FT-857D manual and service manual. I can't find any information on the color code.

    Are you sure it is a 4P4C? From the connection diagram in the service manual (page 7), it...
  19. Thread: what antenna

    by k7mem
    Replies
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    375

    Your search may be hampered by the fact that,...

    Your search may be hampered by the fact that, antennas are often specified as having a "UHF mount". For example, this one from DX Engineering:

    https://www.dxengineering.com/parts/dmn-nr770hb
    ...
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    It's interesting that "radioqth.net" will show...

    It's interesting that "radioqth.net" will show some call signs with the KW prefix, but not all. Anyway, it looks like he has resubmitted his application and will probably get KW6EMC.
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    Yes. I was able to look up your application on...

    Yes.

    I was able to look up your application on http://ae7q.com/. I shows that you applied for two possible vanity call signs. But there are two problems with your application.

    One problem is...
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    It will be quite a climate change. I lived for...

    It will be quite a climate change. I lived for about 40 years in the Phoenix area and got very use to the mild winters. Of course, the summers were no picnic. But now I live in Northern Arizona,...
  23. While the FCC has mandated that no manufacturer...

    While the FCC has mandated that no manufacturer shall make LED light that cause interference. However, many manufacturers still do. RFI from LED lights is pretty common, even in the home. Just do a...
  24. Base Radios You have come across a pretty interesting...

    You have come across a pretty interesting circuit. While it isn't used any more, and you can barely find a reference to the operating mode in any book or document, I still find it interesting. It's...
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    What kind of "buffer" are you talking about? Do...

    What kind of "buffer" are you talking about? Do you mean a tuner?

    The IC-7300 manual doesn't show anything needed other than the three cables. The ALC cable is optional, but does help provide...
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