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No Tx Power or Tx Audio
Just some info...
Purchased a new FT 817 @ Dayton this year. I found extremely low Tx power & Tx audio only in the USB & LSB modes (all bands & both front and rear antenna). Checked SWR, changed from internal battery to external 12v, changed various power levels.....no difference. Did a reset, everything is OK now. hmmmmm Faris N2FH |
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Re: MP-1 / AP-10A / ATX (3/8-24 hardware MP-1 mount)
Barry W5WB wrote:
I forgot to mention that the current B&W coil is easy to useThanks for anwering all the questions about the AP-10A, Barry! The AP-10A coil and its hardware would be useful piece parts that could be mixed and matched with other antenna parts, after a little machine work making some adapters. Looks like the AP-10A makes an efficient fixed portable antenna, as it was intended. I guess for those of us who want a single travel antenna which can fullfull both mobile and portable requirements, the stock AP-10A might not be quite as well suited. For the versatility that the MP-1 and its FT-817 bracket provides with fixed portable, mobile, and pedestrian mobile use... I have a hunch the MP-1 would still be my choice when packing light for a trip... especially for rental cars and pedestrian. Speaking of "packing light"... I've recently been using the new ATX with the 3/8-24 threads for those times when I travel with an absolute minimum size package. Although the efficiency of the ATX is not as good as either the MP-1 or the AP10A, I've managed to make some Pedestrian Mobile SSB QSOs on 18MHz~21MHz with the ATX and the FT-817. On 7, 10, 14MHz, I have only made CW contacts... SSB 5W just doesn't cut it there with this combo. The ATX (3/8-24) using the MP-1 mount on the FT-817 is a much more durable combination for pedestian use than my "old" ATX BNC. Bonnie KQ6XA |
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New FT-817
FWIW, I got around to opening the FT-817 I purchased at Dayton
(shipped to my home) today and noted two things. First, the ferrite bead is now part of the accessories. Second, the 7240 kHz birdie is even louder than on my old 817. My first 817 is from Lot 03 (first group into the US) and the new one is from Lot 21. 72 de Barry - W4WB |
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Re: headsets for FT817
Doug Faunt N6TQS +1-510-655-8604
Cc: FT817@...
From: "Pres Waterman" <pres@...> Date: Sat, 2 Jun 2001 11:30:06 -0400 > Has anyone tried a telephone headset for the rig? They are small and > light. If you mean a "cellular" headphone ( and I am sure you do ) I have been thinking this one over, especially for bicycle use. The only problem is there is no headphone audio for receive present on the modular socket. Well, 2 solutions come to mind: 1 would be an ugly 2 connector idea, where the mic and headphone each plug in, or the other would be either multiplexing the receive audio onto an otherwise unused pin during receive such as MIC GND, PTT or even riding on the +5v line. For your consideration, the wires are as follows: Looking INTO the jack with the lock tab DOWN: 1 Down 2 Up 3 +5 4 MIC GND 5 Mic 6 PTT 7 GND 8 Fast Thoughts? I don't characterise the two plug adapter as particularly ugly, myself. Does anyone know if the up/down/fast functions are contact closures to ground, or something else? Bicycle mobile was what kicked my thinking in this area, since behind-the-head headsets, with noise-cancelling mikes are readily available. I feel uncomfortable about modifying my helmet for an over-the-top headset. A PTT box, perhaps with the other functions available also, that would velcro to the handlebars would also be the place where the headset would attach. Very convenient for dismounting. 73, doug who took a complete digital/voice HF/VHF/UHF station to the ARES meeting in a shoulder bag, on my bicycle. - --z--jf3m0bT2xlelTFC7ubQAzMokezq5FdgY4a77-- ------- End of forwarded message ------- |
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Re: NorCal QRP BLT tuner
wb2iw@aol.com
The BLT tuner is available...I just built one, nice kit....with a ribbon
wire feeder and mini dipole i was able to work several states on 10,15,17 meters (ssb) on a quick test in my back yard with the dipole hanging from a tree 8 feet off the ground. the tuner is very small and has a neat tuneup led. you will like it.....thanks ,bill wb2iwc |
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SuperComm anyone?
Jeff Francis
Anbody else going to SuperComm in Atlanta this week? It's a
telecommunications trade show, for those who don't know. We could hook up for a malted/distilled beverage (or three) and swap radio stories. I'm gonna give "Hotel-Room-Portable" a shot again with the FT-817, though I generally don't have much luck. Maybe I'll get lucky and get a high room with a window that opens, for a change... -- +-------------------------------+----------------------------------+ | Jeff Francis - N0GQ | Jeff's Rule of Life #16 | | Senior Product Engineer | ------------------------- | | Touch America - tamerica.com | Love is like a snowmobile racing | | Denver, CO USA DM79nr | across the tundra. Suddenly, it | | 39d37m36s N 104d53m21s W | flips over, pinning you | | jeff@... | underneath. Then at night, the | | | ice weasels come. | +-------------------------------+----------------------------------+ |
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CAT CTCSS programming info
bob.freeth@dial.pipex.com
The user guide is less than helpful when it comes to knowing
how to send a CTCSS Tone to the FT-817. The Opcode command chart lists: CTCSS Tone P1 P2 * * 0B P1~P2: CTCSS Tone Frequency (Note 1) When you look at Note 1: CTCSS Tone, it is just a table of CTCSS tones, with no reference to P1 or P2. What is needed in P1 and P2 are the numerics shown in the table, as four-bit nibbles with leading zeros if required. e.g. for a tone of 67.0 you need P1 as &H06 and P2 as &H70 179.9 P1 &H17 P2 &H99 and so on. Hope this is of help to some. Remember that this just sets the tone for the band you are currently in. To activate it you need to be in FM and issue the CTCSS/DCS mode command 0A with the required parameter P1. Bob G4HFQ P.S. Although I have not programmed DCS codes from the PC I rather suspect a similar approach would work. |
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Re: headsets for FT817
Brian B. Riley, N1BQ
I just got my AD-1YM adapter and have hooked up my Heil Pro-5 and it
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works fine. I am a little unhappy at the adapter gymnastics for the 1/4" stero off the headset, but I added a Rat Shack right angle adapter (1/8 stereo to 1/8 stereo) so that mess lasy reasonably clean. I am cutting the damned 1/4 mono for the PTT off and putting a 1/8 on it and making a small puhbutton holder for that, of course there is always VOX, I haven't tried that yet. -----Original Message----- |
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Re: Simple FT-817 interface
Pres Waterman
Has anyone built a simple RS-232 interface for the FT-817?Yes, Yaesu has. It's compact, well built, inexpensive, and guaranteed to not blow up your rig. It has the proper connectors on it. CT-62 is the model and it's $30 Pres Waterman W2PW c/o Patchogue Motors, Inc. Long Island Ford and Kia Dealer GO BILLS! |
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FTBasic V1.4.604: CTCSS fix, and Status Indicators
bob.freeth@dial.pipex.com
V1.4.604 of FTBasic is available for download at
This version fixes a problem that crept in whereby an FT847 would be one tone off the desired tone. While I was at it I added a few indicators to show the status of CTCSS - Enc, Dec and frequency. The indicators are the best guess that the program can make of the state of the rig from 'knowledge' of what commands it has sent. If you modify CTCSS state or tone from the rig then the program does not know what's going on as, apart from the FT-100, there is no feedback as to whether tones are on or whatever. During testing the changes it became clear that the FT-817 is a bit fussy about delays between commands when changing the CTCSS state, so I have added a further fixed delay inside the program. Any direct feedback to me on the success (or otherwise) of this change would be appreciated. 73, Bob G4HFQ |
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Re: headsets for FT817
Pres Waterman
Has anyone tried a telephone headset for the rig? They are small andIf you mean a "cellular" headphone ( and I am sure you do ) I have been thinking this one over, especially for bicycle use. The only problem is there is no headphone audio for receive present on the modular socket. Well, 2 solutions come to mind: 1 would be an ugly 2 connector idea, where the mic and headphone each plug in, or the other would be either multiplexing the receive audio onto an otherwise unused pin during receive such as MIC GND, PTT or even riding on the +5v line. For your consideration, the wires are as follows: Looking INTO the jack with the lock tab DOWN: 1 Down 2 Up 3 +5 4 MIC GND 5 Mic 6 PTT 7 GND 8 Fast Thoughts? Pres Waterman W2PW c/o Patchogue Motors, Inc. Long Island Ford and Kia Dealer GO BILLS! |
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ALL READ PLEASE: Change the Subject Line!
The FT817 Group is a very active group that generates LOTS of
messages. PLEASE change the subject line in your replies to posts/messages to reflect the subject you are talking about. This will help others of the Group to decide to read or not read a post --- this saves valuable time. A typical example is the thread with the subject "RS Whip" that presently has numerous replies The subject started asking a question about the 72" telescoping RS whip for under $5 and is now discussing kites and balloons. Changing the subject is fine, but please take just a moment to change the subject line to reflect what you are discussing. Please note that --- 1. You can retype the subject when you reply without messing up the links. 2. Your post will show up in the proper thread. 3. You will help your fellow Group members. Thank you in advance for your consideration and contributions. 72/73 de Barry - W4WB FT817 Group Co-Moderator |
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Re: MP-1 / AP-10A / antenna mounting hardware for FT817
Hi John,
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I believe what Bonnie was asking me was if the B&W coil could be mounted in place of the MP-1 coil. That is the reason for the 1/4-20 to 3/8-24 converter. I forgot to mention that the current B&W coil is easy to use compared to the older version. It has a fly lead that just attaches to the place you desire on the coil. I agree that the AP-10A is not a magic bullet nor is any other whip. For those interested in small loaded whip-like antennas, reading of the sections regarding mobile antennas in the ARRL Antenna Handbook and the like is a great place to start. In short, the radiation efficiency for shortened whips is rather low. However, at even 3%, it is down by about 2.5 S-units from an antenna having 100% efficiency. When the band is open, it is not such a big deal. The use of extension rods is a good idea. You can move the coil more towards the center and realize different characteristics. Since you have a RF-1 analyzer as I recall, you will be able to observe the effects of coil position. In another post, Nick mentioned the old technique of using caps at the base to null out the reactance. I'm not sure of the value of doing this with the baseline MP-1 since I have found good tuning by simply using a good tuned counterpoise. I further note that keeping the "radials in a wad and moving them around to get minimum SWR" is just providing the needed capacitance. Of course, the radiation efficiency will be found lacking. 72 de Barry - W4WB --- In FT817@y..., "John O. Newell" <jnewell@m...> wrote:
The bolt in the coil bottom is a standard 1/4-20. It is aOr, to drill out the hole and tap 3/8-24. Should be enough |
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antenna and mfj259
Tom Mc
For those not in the know....I know the MFJ 259 is a diagnostic SWR reader, but how do you tune an The MFJ is really a transmitter of abt 10mw .... If your using an antenna for multi-band with a manual tuner, the MFJ makes it very easy to setup for TX on the bands without QRM. With a 2-way switch inline (radio/MFJ), you switch to the MFJ, set the freq desired for operation on the MFJ unit, adjust the antenna tuner till the MFJ shows the best SWR match. Switch over to the radio which is on the same freq , the tuner is already to go! The whole process takes a very short time and you'll be certain the radio sees a good match. best Tom aa2vk PS and yes, it is bigger than most QRP radios, but this works for any output power withpout an auto-tuner and there are times when you lug all the gear along; like field day! :) -- **** * Member of NORCAL, NJQRP, LIQRP, SGCI * * K2 #1213 * * LIQRP Web Page: www.erols.com/tjmc/liqrp * * Personal web page : www.erols.com/tjmc * **** |
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Re: An MP-1 that is very hot
Nick Marsh
How about an MFJ 910? I believe this is a small box with fixed caps that
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can be switched to aid in finding a good match. Usually mounts at or near the base. I haven't seen anyone discussing this old trick in any of the MP-1/ATX or other vertical threads. Swan, Master Mobile and others had these many years ago for their particular types of mobile verticals. Nick WB4SQI g4ilo@... wrote:
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Re: MP-1 / AP-10A / antenna mounting hardware for FT817
John O. Newell
The bolt in the coil bottom is a standard 1/4-20. It is aOr, to drill out the hole and tap 3/8-24. Should be enough stock left for that (though I think I'd prefer not to do it with a hand drill). Getting back to the bigger topic, though, as someone mentioned, I think it is fair to say that the AP-10A is not a magic bullet. The coil may have slightly higher Q and the instructions may help getting it tuned faster, while the MP-1 is more compact and has nice mounting hardware. Both need care and skill to get predictably good results. I bought some 3/8 aluminum rod stock last night and am going to make up a couple of extension rods for experimenting with the MP-1. 73 John Newell KB1FPM |
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