From af5cc2 at gmail.com Wed May 6 16:52:57 2020 From: af5cc2 at gmail.com (John Geiger) Date: Wed, 6 May 2020 15:52:57 -0500 Subject: [Kenwood] FS: Kenwood MB-10 mobile bracket for TR751/851 and FM rigs Message-ID: I have for sale a Kenwood MB-10 mobile mount used for many Kenwood Radios, including the TR751/851 and TM *Phone* 3530. These are really hard to find now! This one is new, never used, and comes with the unopened hardware package of screws and the Allen wrench. I am asking $40 shipped CONUS and can take paypal/check/mo. 73 John AF5CC From teknoskillz at comcast.net Thu May 14 16:32:23 2020 From: teknoskillz at comcast.net (Steve H) Date: Thu, 14 May 2020 16:32:23 -0400 Subject: [Kenwood] TS-530S low RX on 40m Message-ID: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> I have a condition where rx on this band seems very low. Sort of present on 20m at times too. The S meter barely moves at all, theres no noise level but I can hear stations. The drive knob kind of behaves like a really wide tuner where the signals get higher as you move it fully ccw. When I put the cal signal on, I can hear it but theres no s meter level at all. Other bands seem to have noise levels and the drive / tune function resonates properly, but overall I think the rx gain seems sort of lacking "robust" is the best way to describe it. I posted about this in a Kenwood hybrid group and I think they said its a common problem in most of some of the hybrids, but cannot recall what they said actually is going on causing it. I remember they said the cal signal ought to be alot stronger than what I reported. I caught alof of flack from them for not "reading the manuals" first before posting for help, then somehow what I said as a reply was studied by the mods, and deemed as "threatening" so I left, and thought I would try here. -- Steve Hearns KA2PTE From 1oldlens1 at ix.netcom.com Thu May 14 16:51:59 2020 From: 1oldlens1 at ix.netcom.com (Richard Knoppow) Date: Thu, 14 May 2020 13:51:59 -0700 Subject: [Kenwood] TS-530S low RX on 40m In-Reply-To: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> References: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> Message-ID: ? I have a TS-520S but have had little trouble with it so am not very knowledgeable. In general I would suggest cleaning the band switch with Deoxit. May take several doses. Work the switch many times (ten or fifteen) each time. ?? The calibrator feeds directly into the antenna input so it gives a pretty good idea of how well the receiver is working. It is conceivable there is a bad crystal but that would not affect more than one band. Simplest is to clean the band switches and see if it does not clear up the problem. On 5/14/2020 1:32 PM, Steve H wrote: > I have a condition where rx on this band seems very low.? Sort > of present on 20m at times too. > > The S meter? barely moves at all, theres no noise level but I > can hear stations. > The drive knob kind of behaves like a really wide tuner where > the signals get higher > as you move it fully ccw. > > When I put the cal signal on, I can hear it but theres no s > meter level at > all. > > Other bands seem to have noise levels and the drive / tune > function > resonates properly, but overall > I think the rx gain seems sort of lacking "robust" is the best > way to > describe it. > > I posted about this in a Kenwood hybrid group and I think they > said its a common problem in most of some of the > hybrids, but cannot recall what they said actually is going on > causing it. I remember they said the cal signal ought to be > alot stronger than what I reported. > > I caught alof of flack from them for not "reading the manuals" > first before posting for help, then somehow what I said as a > reply was > studied by the mods, and deemed as "threatening" so I left, and > thought I would try here. > > -- > Steve Hearns > KA2PTE > > > > > > ______________________________________________________________ > Kenwood mailing list > Home: http://mailman.qth.net/mailman/listinfo/kenwood > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Kenwood at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: > http://www.qsl.net/donate.html -- Richard Knoppow 1oldlens1 at ix.netcom.com WB6KBL From stephoto at mind.net Thu May 14 16:52:42 2020 From: stephoto at mind.net (Steve Sutfin) Date: Thu, 14 May 2020 13:52:42 -0700 Subject: [Kenwood] TS-530S low RX on 40m In-Reply-To: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> References: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> Message-ID: Hi Steve, One thing that comes to mind about hybrids is that besides having mechanical switches and buttons ( my FT-901 has a bunch ) they still use the old fashioned band switch. I clean and 'work' the switches/ buttons frequently as maintenance but If your issue is not on all bands cleaning the band switch contacts is the first place I would start. 73, Steve k7dna On May 14, 2020, at 1:32 PM, Steve H wrote: > I have a condition where rx on this band seems very low. Sort of > present on 20m at times too. > > The S meter barely moves at all, theres no noise level but I can > hear stations. > The drive knob kind of behaves like a really wide tuner where the > signals get higher > as you move it fully ccw. > > When I put the cal signal on, I can hear it but theres no s meter > level at > all. > > Other bands seem to have noise levels and the drive / tune function > resonates properly, but overall > I think the rx gain seems sort of lacking "robust" is the best way to > describe it. > > I posted about this in a Kenwood hybrid group and I think they said > its a common problem in most of some of the > hybrids, but cannot recall what they said actually is going on > causing it. I remember they said the cal signal ought to be > alot stronger than what I reported. > > I caught alof of flack from them for not "reading the manuals" > first before posting for help, then somehow what I said as a reply was > studied by the mods, and deemed as "threatening" so I left, and > thought I would try here. > > -- > Steve Hearns > KA2PTE > > > > > > ______________________________________________________________ > Kenwood mailing list > Home: http://mailman.qth.net/mailman/listinfo/kenwood > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Kenwood at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From teknoskillz at comcast.net Thu May 14 17:57:16 2020 From: teknoskillz at comcast.net (Steve H) Date: Thu, 14 May 2020 17:57:16 -0400 Subject: [Kenwood] TS-530S low RX on 40m In-Reply-To: References: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> Message-ID: Steve Yes, forgot to mention I wound up cleaning the bandswitch quite a few times with deox-it. Theres some improvement but it appears theres still issues. I ran into a video regarding "peaking" the coils on the RF board that I wonder if its worth a try. This radio was owned by a a heavy smoker, so when I cleaned the band switch, and powered up the radio, some sizzling and sparking came out monentarily, as I guess the niccotine coating blended with the deox-it and took longer to dry than I expected. Luckily no noticable damage took place as I immediately removed power and let it dry fully before further tests. -- Steve Hearns KA2PTE ----- Original Message ----- From: "Steve Sutfin" To: "Steve H" Cc: Sent: Thursday, May 14, 2020 4:52 PM Subject: Re: [Kenwood] TS-530S low RX on 40m > Hi Steve, > One thing that comes to mind about hybrids is that besides having > mechanical switches and buttons ( my FT-901 has a bunch ) they still use > the old fashioned band switch. I clean and 'work' the switches/ buttons > frequently as maintenance but If your issue is not on all bands cleaning > the band switch contacts is the first place I would start. > 73, > Steve k7dna > > On May 14, 2020, at 1:32 PM, Steve H wrote: > >> I have a condition where rx on this band seems very low. Sort of >> present on 20m at times too. >> >> The S meter barely moves at all, theres no noise level but I can hear >> stations. >> The drive knob kind of behaves like a really wide tuner where the >> signals get higher >> as you move it fully ccw. >> >> When I put the cal signal on, I can hear it but theres no s meter level >> at >> all. >> >> Other bands seem to have noise levels and the drive / tune function >> resonates properly, but overall >> I think the rx gain seems sort of lacking "robust" is the best way to >> describe it. >> >> I posted about this in a Kenwood hybrid group and I think they said its >> a common problem in most of some of the >> hybrids, but cannot recall what they said actually is going on causing >> it. I remember they said the cal signal ought to be >> alot stronger than what I reported. >> >> I caught alof of flack from them for not "reading the manuals" first >> before posting for help, then somehow what I said as a reply was >> studied by the mods, and deemed as "threatening" so I left, and thought >> I would try here. >> >> -- >> Steve Hearns >> KA2PTE >> >> >> >> >> >> ______________________________________________________________ >> Kenwood mailing list >> Home: http://mailman.qth.net/mailman/listinfo/kenwood >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Kenwood at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > From 1oldlens1 at ix.netcom.com Thu May 14 18:08:46 2020 From: 1oldlens1 at ix.netcom.com (Richard Knoppow) Date: Thu, 14 May 2020 15:08:46 -0700 Subject: [Kenwood] TS-530S low RX on 40m In-Reply-To: References: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> Message-ID: <5a206d88-fa60-50b4-b094-119ecaddadc3@ix.netcom.com> ?? I don't like that. I don't know if tobacco residue would be conductive but whatever caused it I would be concerned something didn't burn out. I have a TS-520S, not a 530 and don't know how much difference there is. Might be completely different. You might do a very careful visual inspection of the band switch to spot anything that look burned. Since it is not working on only one band the problem is already fairly isolated. If the set is anything like a Drake, with which I am familar, the crystal band oscillator may be weak or at least its injection to the mixer may be low. ?? If it was working OK before its not likely something went out of tune suddenly unless a coil burned up or a capacitor went bad. Worth looking at. I can only suggest tracing the signal path. Again, I don't like the sizzle. On 5/14/2020 2:57 PM, Steve H wrote: > Steve > > Yes, forgot to mention I wound up cleaning the bandswitch quite > a few times with deox-it. Theres some improvement > but it appears theres still issues. > > I ran into a video regarding "peaking" the coils on the RF > board that I wonder if its worth a try. > > This radio was owned by a a heavy smoker, so when I cleaned the > band switch, and powered up the radio, > some sizzling and sparking came out monentarily, as I guess the > niccotine coating blended with the deox-it > and took longer to dry than I expected. Luckily no noticable > damage took place as I immediately removed power > and let it dry fully before further tests. > > -- > Steve Hearns > KA2PTE > > ----- Original Message ----- From: "Steve Sutfin" > > To: "Steve H" > Cc: > Sent: Thursday, May 14, 2020 4:52 PM > Subject: Re: [Kenwood] TS-530S low RX on 40m > > >> Hi Steve, >> ?One thing that comes to mind about hybrids is that besides >> having mechanical switches and buttons ( my FT-901 has a bunch >> ) they still? use the old fashioned band switch. I clean and >> 'work' the switches/ buttons frequently as maintenance but If >> your issue is not on all? bands cleaning the band switch >> contacts is the first place I would? start. >> 73, >> Steve k7dna >> >> On May 14, 2020, at 1:32 PM, Steve H wrote: >> >>> I have a condition where rx on this band seems very low.? >>> Sort of present on 20m at times too. >>> >>> The S meter? barely moves at all, theres no noise level but I >>> can? hear stations. >>> The drive knob kind of behaves like a really wide tuner where >>> the signals get higher >>> as you move it fully ccw. >>> >>> When I put the cal signal on, I can hear it but theres no s >>> meter? level at >>> all. >>> >>> Other bands seem to have noise levels and the drive / tune >>> function >>> resonates properly, but overall >>> I think the rx gain seems sort of lacking "robust" is the >>> best way to >>> describe it. >>> >>> I posted about this in a Kenwood hybrid group and I think >>> they said? its a common problem in most of some of the >>> hybrids, but cannot recall what they said actually is going >>> on? causing it. I remember they said the cal signal ought to be >>> alot stronger than what I reported. >>> >>> I caught alof of flack from them for not "reading the >>> manuals"? first before posting for help, then somehow what I >>> said as a reply was >>> studied by the mods, and deemed as "threatening" so I left, >>> and? thought I would try here. >>> >>> -- >>> Steve Hearns >>> KA2PTE >>> >>> >>> >>> >>> >>> ______________________________________________________________ >>> Kenwood mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/kenwood >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Kenwood at mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: >>> http://www.qsl.net/donate.html >> > > ______________________________________________________________ > Kenwood mailing list > Home: http://mailman.qth.net/mailman/listinfo/kenwood > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Kenwood at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: > http://www.qsl.net/donate.html -- Richard Knoppow 1oldlens1 at ix.netcom.com WB6KBL From teknoskillz at comcast.net Sat May 16 13:30:14 2020 From: teknoskillz at comcast.net (Steve H) Date: Sat, 16 May 2020 13:30:14 -0400 Subject: [Kenwood] TS-530S low RX on 40m In-Reply-To: <5a206d88-fa60-50b4-b094-119ecaddadc3@ix.netcom.com> References: <8E40B18DBA1E4D5D819AA034C78FE899@HAL2000> <5a206d88-fa60-50b4-b094-119ecaddadc3@ix.netcom.com> Message-ID: <3BBE28CAF53646408F4FE56C31662C64@HAL2000> Thought about it and noticed the IF board is using the same Omron obsolete relay as the TS-830S uses and its been known to cause rx issues. So I set about removing the IF board and giving it a good cleaning on the component side, which I accomplished, and also I am very adept at resolving issues with the relays used in these Hybrids where I restore their operation, so while I was at it I took care of the relay on this board. When all was said and done, I powered up the radio and the S-meter read a steady 9 no matter what. The RF gain made it bounce a little when rotated, but no audio. I realized I didnt finish defluxing the foil side of the pcb as intended, and recalled it had alot of niccotine film on it, and I likely worsened it with what I did, so I removed the board again, this time removed all the flux and niccotine. Also went and cleaned the trimmer potenitometers, after taking a photo of the board to note their original positions. As I installed the board I realized there are (2) connectors exactly the same that will fit into different locations on the board, and I had these reversed. After installing it again, with the connectors in their right locations, the S meter was no longer reading a 9, it was 0, but still no audio. As I juggled one of these connectors, the S-meter began to read something because I had the RF gain pot half way up. I further wiggled the cables and could start to hear some faint audio in the headphones. Tuns out one connector near the very bottom has loose pins because I can move it and hear rx pretty well in the headphones, so thats my next job - to again remove the board, and resolder all the connectors pads on it, which will hopefully get things working again. Makes me wonder if any of the Hybrid experts out there had seen this before. Its pretty much a standard in design these days to not use 2 connectors with the same style for boards in any consumer electronics product. I guess the stuff designed in the 80's didnt adpot this standard yet. -- Steve Hearns KA2PTE ----- Original Message ----- From: "Richard Knoppow" <1oldlens1 at ix.netcom.com> To: Sent: Thursday, May 14, 2020 6:08 PM Subject: Re: [Kenwood] TS-530S low RX on 40m > I don't like that. I don't know if tobacco residue would be conductive but > whatever caused it I would be concerned something didn't burn out. I have > a TS-520S, not a 530 and don't know how much difference there is. Might be > completely different. You might do a very careful visual inspection of the > band switch to spot anything that look burned. Since it is not working on > only one band the problem is already fairly isolated. If the set is > anything like a Drake, with which I am familar, the crystal band > oscillator may be weak or at least its injection to the mixer may be low. > If it was working OK before its not likely something went out of tune > suddenly unless a coil burned up or a capacitor went bad. Worth looking > at. I can only suggest tracing the signal path. Again, I don't like the > sizzle. > > On 5/14/2020 2:57 PM, Steve H wrote: >> Steve >> >> Yes, forgot to mention I wound up cleaning the bandswitch quite a few >> times with deox-it. Theres some improvement >> but it appears theres still issues. >> >> I ran into a video regarding "peaking" the coils on the RF board that I >> wonder if its worth a try. >> >> This radio was owned by a a heavy smoker, so when I cleaned the band >> switch, and powered up the radio, >> some sizzling and sparking came out monentarily, as I guess the niccotine >> coating blended with the deox-it >> and took longer to dry than I expected. Luckily no noticable damage took >> place as I immediately removed power >> and let it dry fully before further tests. >> >> -- >> Steve Hearns >> KA2PTE >> >> ----- Original Message ----- From: "Steve Sutfin" >> To: "Steve H" >> Cc: >> Sent: Thursday, May 14, 2020 4:52 PM >> Subject: Re: [Kenwood] TS-530S low RX on 40m >> >> >>> Hi Steve, >>> One thing that comes to mind about hybrids is that besides having >>> mechanical switches and buttons ( my FT-901 has a bunch ) they still use >>> the old fashioned band switch. I clean and 'work' the switches/ buttons >>> frequently as maintenance but If your issue is not on all bands cleaning >>> the band switch contacts is the first place I would start. >>> 73, >>> Steve k7dna >>> >>> On May 14, 2020, at 1:32 PM, Steve H wrote: >>> >>>> I have a condition where rx on this band seems very low. Sort of >>>> present on 20m at times too. >>>> >>>> The S meter barely moves at all, theres no noise level but I can hear >>>> stations. >>>> The drive knob kind of behaves like a really wide tuner where the >>>> signals get higher >>>> as you move it fully ccw. >>>> >>>> When I put the cal signal on, I can hear it but theres no s meter level >>>> at >>>> all. >>>> >>>> Other bands seem to have noise levels and the drive / tune function >>>> resonates properly, but overall >>>> I think the rx gain seems sort of lacking "robust" is the best way to >>>> describe it. >>>> >>>> I posted about this in a Kenwood hybrid group and I think they said its >>>> a common problem in most of some of the >>>> hybrids, but cannot recall what they said actually is going on causing >>>> it. I remember they said the cal signal ought to be >>>> alot stronger than what I reported. >>>> >>>> I caught alof of flack from them for not "reading the manuals" first >>>> before posting for help, then somehow what I said as a reply was >>>> studied by the mods, and deemed as "threatening" so I left, and thought >>>> I would try here. >>>> >>>> -- >>>> Steve Hearns >>>> KA2PTE >>>> >>>> >>>> >>>> >>>> >>>> ______________________________________________________________ >>>> Kenwood mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/kenwood >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Kenwood at mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>> >> >> ______________________________________________________________ >> Kenwood mailing list >> Home: http://mailman.qth.net/mailman/listinfo/kenwood >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Kenwood at mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > -- > Richard Knoppow > 1oldlens1 at ix.netcom.com > WB6KBL > > ______________________________________________________________ > Kenwood mailing list > Home: http://mailman.qth.net/mailman/listinfo/kenwood > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Kenwood at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From kenw8ek at gmail.com Sun May 17 11:32:31 2020 From: kenw8ek at gmail.com (Ken, W8EK) Date: Sun, 17 May 2020 11:32:31 -0400 Subject: [Kenwood] Kenwood HF Xcvr, Mic, cables, boxes and more FS Message-ID: <5273419e-3f33-e74d-b58f-32972c0d26b7@gmail.com> HF Transceiver, Microphone, Phone Patch, cable for switching linear amp, Original Boxes, and more For Sale: . Kenwood TS-140 HF Transceiver: The Kenwood TS-140 transceiver is an HF transceiver that covers SSB, CW, AM, FM and can be used for digital modes. It has a general coverage receiver. The dual 10 Hz step digital VFOs operate independently of each other. 31 Memory channels can store frequency, mode and narrow-wide information in CW mode. Refinements include: IF Shift, RIT, VFO Tuning Torque adjust, multifunction meter, speech processor, numerious I/O jacks and RF attenuator. Features: Break-in and semi break-in 31 Memories FM Squelch RIT IF Shift Adjustable VFO Torque AGC Fast/Slow Memory and Band scan It requires 13 V DC at about 20 amps. This one has a great receiver and transmits full 100 Watts. It looks fine. It has a minor problem in that the PLL is unlocked above 21.5 MHz. - With paper work for only $250. . Kenwood MC-80 Desk Microphone: The Kenwood MC-80 is an omnidirectional electret condenser desk mic. It features up-down tuning on compatible Kenwood transceivers and a built-in pre-amp. It has a potentiometer adjustment on the rear panel to adjust the output level. There is a switch for PTT and also a lock feature. The frequency response is 200 Hz to 7 kHz. The mic terminates with a round 8 pin mic plug. It obtains its operating voltage from the Kenwood rig. This particular mic works like it should, and looks fine. Buy it with paper work for only $75 . Kenwood PC-1 Phone Patch For Sale: The Kenwood PC-1 phone patch provides a connection between the transceiver and a telephone line. It is designed to provide high isolation between receiver input and transmitter output. Impedance levels (nominal): Line 600 ohm Receiver Input 8 ohms Speaker Output 8 ohms Microphone 50k ohms Microphone input and output is 4 pin. 6 x 2.25 x 5.75 inches. This one works fine and looks fine. Only $25. . Kenwood Extension Feet: Many of the earlier Kenwood rigs (such as the TS-520, TS-530, TS-820, TS-830, and many more) have extra "feet" that could increase the height in the front of the rig, giving it a nice "tilt". These add to the present feet, and are about 3/4 inch thick and 1 1/4 inch in diameter. This is a set of two feet, with the hardware to add them. They are in like new condition. Buy the pair for only $15. . Linear Amp Switching Cables for Kenwood Rigs: This cable goes from a Kenwood transceiver to a linear amplifier to switch the amp from transmit to receive. One end has a DIN connector, as is used with most Kenwood rigs. The other end has an RCA phono plug, as used by most linear amplifiers. Before using this cable, please check the switching capabilities of your transceiver, and the requirements of your amplifier. Cable for switching the T/R relay Only $15. Cable for switching T/R relay with additional ALC cable $20 . Kenwood Charger for TH-225 HT; $10 . Kenwood SMC-30 Excellent condition. $20 . Original Empty Boxes For Sale: All are original boxes that also include the inserts that came with them when new. Some may even have plastic bags. Kenwood FM-430 FM Unit $3 Kenwood MB-4 Mounting Brack $3 Kenwood MC-30 Mic $4 Kenwood MC-80 Desk Mic $8 Kenwood PB-2 Battery $3 Kenwood PB-21 Battery $3 Kenwood PB-24 Battery Pack $3 Kenwood SMC-25 Spkr Mic $3 Kenwood TH-22, 2 m HT $12 Kenwood TM-221, 2 m Xcvr $10 Kenwood TU-79 PL unit $3 Kenwood TS-711 VHF Xcvr $15* Kenwood UBZ-LF14 FM Xcvr $5 Kenwood VS-1 Voice Synth $3 * indicates no insert . I also have many other accessories available such as many different types of microphones, HTs, VHF and UHF rigs, HF and VHF/UHF antennas, connectors, miscellaneous accessories, etc. Just too many to list here. Please e-mail your requests. . Prices do not include shipping from Florida. Thanks. 73, Ken, W8EK Ken Simpson E-mail to W8EK at FLHam.net or W8EK at arrl.net Voice Phone (352) 732-8400 . .