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Re: New member
¿ªÔÆÌåÓýI'd recommend the Turbo Tuner. It works with most antennas and uses the TUNE button on the 857D to start the tuning cycle.Randy (KE5EOT)
ARRL, QCWA, ARES, RACES, ROWH
On 12/30/20 9:34 AM, J.D. Barron wrote:
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Re: WTB FT857D
Bob Perry has 5 including a new one still in the box. He is in Milton, FL. W5CL. PM? me and I will get yout his contact info or look him up on QRZ.? On Thu, Dec 31, 2020, 4:57 AM David <david.pommerenke@...> wrote:
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Re: WTB FT857D
I have two, I think both are working.? AD0PY / OE6NZM On Thu, Dec 31, 2020 at 11:42 AM Jack W4GRJ <w4grj@...> wrote: Want to buy FT857D working or not working. |
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Re: New member
Thanks for the reply Eric.
I don't plan to use the 80 meter band mobile. I have the manual switch if I need to use that and I really don't plan to tune driving down the road, but rather more of a portable operation. Since the Tarheel requires 12 volts for the motor I was going to bring that in separately. I assume that there is a quiescent voltage range between 8 and 12 volts. A comparator could be setup to determine up or down like the ATAS circuit. and select the drive polarity to the motor. I thought that it would be a nice project. Thanks again for the reply |
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Re: New member
¿ªÔÆÌåÓýHi JD, ? In order to control the Tarheel from the A%&, you would need to monitor the DC voltage on the antenna connection to the antenna. The Yaesu rigs pout out 12V to extend the antenna, i.e. go lower in frequency, and 8V to shorten it (go higher in frequency). ? Be aware that, even if the Tarheel can do 80m, it won¡¯t be able to using the ATAS control as the Yaesu rigs will not do auto tuning below 40m as the ATAS antennae only go down to 40m. ? It may be possible to use the Tuner option instead of the ATAS option in menu 85 but would require an external control system of some sort. ? 73¡.Eric VK2VE ? From: [email protected] <[email protected]> On Behalf Of J.D. Barron - jeter.d.barron at gmail.com
Sent: Thursday, 31 December 2020 02:34 To: [email protected] Subject: Re: [FT-857] New member ? Skip, |
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Re: New member
Skip,
I wanted to ask you a question about the ATAS system. I happen to have a Tarheel screwdriver antenna and I have looked at the ATAS control board and I am looking into adapting the circuit to drive it from my FT857. I plan to use + 12 volt from the car to power the system for the antenna drive power and the signal from the FT857 to the comparator circuit to determine to stop, drive up and down. Do you have an opinion (other than to scrap it and buy ab ATAS system HiHi)? Thanks. Best regards, JD. KE4MD |
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Re: New member
Wheeler M
¿ªÔÆÌåÓýWelcome aboard Pierre ? 73 Malcolm ZL2UDF ? From: [email protected] [mailto:[email protected]] On Behalf Of Pierre Guillot ? Owner since 10 years of a FT-897D I wanted to join this group as these two tranceivers share the same electronics. |
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Re: Is FT-857D basically the same as FT-897D
The original 857 (late 2002 or early 2003 introduction) did not have the DSP card standard, but it was an option.? Nor did the original 857 include 60m pre-programmed channels in the memory.? The 857D came out late 2003 or 2004 as I recall, and at least had the DSP card standard.? I have an original 2003 857 with the optional DSP card and without the 60m channels.? I also have a 2016 857D which has the DSP hard mounted and includes the five 60m channels in the memory.? Hope this helps.... de Cliff W3KKO Sent from AOL Mobile Mail On Tuesday, December 22, 2020 Leonard K. Pennock <[email protected]> wrote: There was both a D and non-D version of the 857 and 897. 857D included the audio frequency DSP that was optional on the 857. 897D got the txco and dsp. The 897 and 857 are identical circuitry in same generation. -- Leonard K. Pennock (AD7AS) On December 22, 2020 9:40:35 PM MST, Eric <eric@...> wrote:
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Re: Is FT-857D basically the same as FT-897D
¿ªÔÆÌåÓýThere was both a D and non-D version of the 857 and 897.857D included the audio frequency DSP that was optional on the 857. 897D got the txco and dsp. The 897 and 857 are identical circuitry in same generation. -- Leonard K. Pennock (AD7AS) On December 22, 2020 9:40:35 PM MST, Eric <eric@...> wrote:
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Re: Is FT-857D basically the same as FT-897D
¿ªÔÆÌåÓýHi Jeff, ? I¡¯m not certain but I don¡¯t believe that there ever was a non-D version of the 857. I think it was the FT-857D from when it was released, unlike the FT-100 which was the original and then they released the FT-100D which had a few enhancements such as the TCXO and larger speaker and the DSP functions. ? 73¡.Eric VK2VE ? From: [email protected] <[email protected]> On Behalf Of ka0kaf@... - ka0kaf at bellsouth.net
Sent: Wednesday, 23 December 2020 10:05 To: [email protected]; [email protected] Subject: Re: [FT-857] Is FT-857D basically the same as FT-897D ? I'm not fully sure, but I thought the D stood for digital that the D version had digital filters where the none D version did not have digital filtering. ? Perhaps someone could correct me here. ? 73 ? Jeff, KA0KAF ? On Tuesday, December 22, 2020, 05:14:46 PM EST, Richard Ferryman via groups.io <g4bbh@...> wrote: ? ? Spent today comparing TX and RX on each rig and they seem to be identical including weak signal and transmit.? Spectrum display is near identical in all modes.? Only difference is frequency stability.? Swapped the TCXOs between the rigs and found both were slightly less stable but still +/- 1Hz or so.? Think the location of the TCXO in the FT-857D is causing temperature changes when the fan runs.. |
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Re: Is FT-857D basically the same as FT-897D
I'm not fully sure, but I thought the D stood for digital that the D version had digital filters where the none D version did not have digital filtering. Perhaps someone could correct me here. 73 Jeff, KA0KAF
On Tuesday, December 22, 2020, 05:14:46 PM EST, Richard Ferryman via groups.io <g4bbh@...> wrote:
Spent today comparing TX and RX on each rig and they seem to be identical including weak signal and transmit.? Spectrum display is near identical in all modes.? Only difference is frequency stability.? Swapped the TCXOs between the rigs and found both were slightly less stable but still +/- 1Hz or so.? Think the location of the TCXO in the FT-857D is causing temperature changes when the fan runs.. Think that is enough.? The 857D was originally only purchased for my mobile operations (mostly with an ATAS aerial) and I think it was a good buy.? Richard (Dick) G4BBH. |
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Re: Is FT-857D basically the same as FT-897D
Spent today comparing TX and RX on each rig and they seem to be identical including weak signal and transmit.? Spectrum display is near identical in all modes.? Only difference is frequency stability.? Swapped the TCXOs between the rigs and found both were slightly less stable but still +/- 1Hz or so.? Think the location of the TCXO in the FT-857D is causing temperature changes when the fan runs..
Think that is enough.? The 857D was originally only purchased for my mobile operations (mostly with an ATAS aerial) and I think it was a good buy.? Richard (Dick) G4BBH. |
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Re: Is FT-857D basically the same as FT-897D
I believe that they are the same radio just in different form factors. The boards are physically different but electrically the same.
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The "little brown wire" does the same in the 857 as it does in the 897 so, if connected (or is it disconnected) it limits the power to 20W. this is useful if you're running the 857 portable off batteries as it reduces the battery drain. 73¡.Eric VK2VE -----Original Message-----
From: [email protected] <[email protected]> On Behalf Of James Clark - James_Clark at gmx.us Sent: Tuesday, 22 December 2020 06:58 To: [email protected] Subject: Re: [FT-857] Is FT-857D basically the same as FT-897D I believe they are electrical identical (do they use the same PCB?) with the sole difference being the 897 has a TCXO which the 857 does not - if yours does then it's after-market. Note: the similarity even extends to the 857 having the "little brown wire" for which it has no use but the 897 uses to detect internal battery power and thus limit output power. |
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Re: Is FT-857D basically the same as FT-897D
I believe they are electrical identical (do they use the same PCB?) with the sole difference being the 897 has a TCXO which the 857 does not - if yours does then it's after-market.
Note: the similarity even extends to the 857 having the "little brown wire" for which it has no use but the 897 uses to detect internal battery power and thus limit output power. |
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Re: Is FT-857D basically the same as FT-897D
¿ªÔÆÌåÓýI haven¡¯t done any tests, but I have both and as far as I can tell, operationally they are identical. ? 73, ? --Hank KB4MTO / TA5ZC ? ? ? From: [email protected] <[email protected]> On Behalf Of Richard Ferryman via groups.io
Sent: Monday, December 21, 2020 11:21 AM To: [email protected] Subject: [FT-857] Is FT-857D basically the same as FT-897D ? I have both and 857D and an 897D, both fitted with wide and narrow filters and TCXOs .? There are obvious differences such as size, cooling etc. but they seem to have pretty much the same specifications and I find they are funcionally the same.? I am curious to know if? the RX and TX are identical or are there differences??? I'm sure someone must have done functional tests and delved into the circuitry. |
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Is FT-857D basically the same as FT-897D
I have both and 857D and an 897D, both fitted with wide and narrow filters and TCXOs .? There are obvious differences such as size, cooling etc. but they seem to have pretty much the same specifications and I find they are funcionally the same.? I am curious to know if? the RX and TX are identical or are there differences??? I'm sure someone must have done functional tests and delved into the circuitry.
Richard (Dick) G4BBH |