what cable to use for arb 704 to ft-991a
Amplifier relay cablevision / buffer interface
| Christian #1724 Hello Group, it might have been asked in the past but I like to ask how the 991A tin can handle a linear amplifier? I got a Heathkit SB-200 and I am not certain if the rig can handle the amplifier without using a buffer interface. I exercise not intendance with my old ICOM 735 and information technology works fine without extra interface. However with the FT991A I read that a few OMs destroyed the 991A'south transistor. It seems a weak point at the Yaesu transceivers in general. Beside the point that I cannot get a cable in the whole of Europe (EC) ! I think I have to solder it on my own or ask a friend with SMD equipment. Any suggestions or recommendations for using an additional buffer intereface e.yard. from American DanRadio? Whatsoever hints for a dealer in Europe? Thanks a lot for your replies, Christian DL1CWR |
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| #1725 Short answer No I believe the SB220 is college Volts and the 991a Relay for keying is 800ma or so @ 12v.. information technology is in the manual and yous should look at the SB220 is 120 but should also look at its manual to verify.. brusk reply youll thank yourself for putting a keying buffer in line.. simple nevertheless dissimilar means to do it.. DIY or a ARB704 ECT.. Hope it Helps KU0D Sent from Mail for Windows x toggle quoted bulletinTestify quoted text From: Christian Hello Group, it might have been asked in the past only I similar to enquire how the 991A tin can handle a linear amplifier? I got a Heathkit SB-200 and I am not sure if the rig can handle the amplifier without using a buffer interface. I exercise not care with my old ICOM 735 and it works fine without extra interface. However with the FT991A I read that a few OMs destroyed the 991A's transistor. It seems a weak signal at the Yaesu transceivers in general. Abreast the betoken that I cannot become a cablevision in the whole of Europe (EC) ! I think I have to solder it on my own or inquire a friend with SMD equipment. Whatsoever suggestions or recommendations for using an additional buffer intereface e.g. from American DanRadio? Whatever hints for a dealer in Europe? Thanks a lot for your replies, Christian DL1CWR |
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| Christian #1726 Thank you a lot for the quick answer! I leave the wonderful ft991A away from the amplifier and use my sometime rig for that. Thanks once more, Shawn! Christian Von: FT-991A@groups.io <FT-991A@groups.io> Im Auftrag von Shawn Johnson Short answer No I believe the SB220 is college Volts and the 991a Relay for keying is 800ma or so @ 12v.. it is in the manual and you should look at the SB220 is 120 simply should also look at its manual to verify.. short respond youll thank yourself for putting a keying buffer in line.. unproblematic yet different ways to do it.. DIY or a ARB704 ECT.. Hope information technology Helps KU0D Sent from Mail for Windows 10 toggle quoted messageShow quoted text From: Christian Hello Grouping, it might have been asked in the past but I like to ask how the 991A tin handle a linear amplifier? I got a Heathkit SB-200 and I am not sure if the rig tin handle the amplifier without using a buffer interface. I do non care with my old ICOM 735 and it works fine without extra interface. However with the FT991A I read that a few OMs destroyed the 991A's transistor. It seems a weak point at the Yaesu transceivers in general. Beside the signal that I cannot become a cable in the whole of Europe (EC) ! I think I have to solder information technology on my own or ask a friend with SMD equipment. Any suggestions or recommendations for using an boosted buffer intereface e.g. from American DanRadio? Any hints for a dealer in Europe? Thanks a lot for your replies, Christian DL1CWR |
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| Clayton Watts #1727 Why non get Solid land LDMOS. toggle quoted messageProve quoted text On Wednesday, Jun ii, 2021 at 11:57 AM Christian <senne@...> wrote:
-- Clayton Watts |
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| glen english LIST #1728 JUST USE A SINGLE 50 CENT TRANSISTOR TO INTERFACE Between THE HIGH AND Depression Control VOLTAGE ! toggle quoted bulletinEvidence quoted text On iii/06/2021 half-dozen:35 am, Clayton Watts wrote: Why not go Solid state LDMOS. |
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| Fred Kepner #1729 I ran my FT991 with my SB-1000 without issue. I had them connected using the Ameritron ARB-704 relay buffer. The ARB-704 connects to the TUN/LIN port on the back of the rig so that port is not available for apply with an external tuner. I used an LDG tuner that continued to the rig through the REM/ALC connection and so that the tuner and amp could both be connected. 73 Fred K3FRK toggle quoted messageTestify quoted text On Wed, Jun 2, 2021 at 11:57 AM Christian <senne@...> wrote:
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| glen english LIST #1730 what's the problem here, maybe I can aid. is information technology amplifier TX keying or ALC render ? toggle quoted messageShow quoted text On 3/06/2021 6:58 am, Fred Kepner wrote: I ran my FT991 with my SB-1000 without event. I had them connected using the Ameritron ARB-704 relay buffer. The ARB-704 connects to the TUN/LIN port on the back of the rig and then that port is not available for employ with an external tuner. I used an LDG tuner that connected to the rig through the REM/ALC connexion so that the tuner and amp could both be continued. |
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| PAUL 50 KRUZEL #1731 You lot take to accept that buffer other wise you accident out diodes in the 991! toggle quoted messageShow quoted text On Wed, June 2, 2021, 05:50:l PM CDT, glen english LIST <glenlist@...> wrote: what's the problem hither, maybe I can assist. is information technology amplifier TX keying On 3/06/2021 half-dozen:58 am, Fred Kepner wrote: |
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| Christian #1732 Thanks once more for the squeamish replies. An OM in my local ham lodge still has a matching, homebrew ptt relais and we only need to alter the mini din plug. Should be rubber, then. Christian DL1CWR Von: FT-991A@groups.io <FT-991A@groups.io> Im Auftrag von PAUL L KRUZEL You have to have that buffer other wise y'all blow out diodes in the 991! toggle quoted bulletinShow quoted text On Wednesday, June 2, 2021, 05:50:50 PM CDT, glen english LIST <glenlist@...> wrote: what's the trouble here, maybe I tin assist. is it amplifier TX keying On iii/06/2021 6:58 am, Fred Kepner wrote: |
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Source: https://groups.io/g/FT-991A/topic/amplifier_relay_cable/83262041?20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,83262041
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