Hi Jordan, I bought an MFJ accessory cable with a 13 pin DIN plug on one end and it goes into the ACC2 socket easily. It looks identical to the other plug that doesn't fit so I don't know where the problem was. I can wiggle the plug in the socket and it doesn't drop out of TX so I'm hoping it will be OK now.
?
Thanks for listening.
?
--
Mike G8GYW
|
Re: Kenwood SM-230 Station Monitor
I am located in Japan, and I have SM-230 and would part with it if somebody want it.? Tom
|
Re: Kenwood SM-230 Station Monitor
On Tue, Mar 25, 2025 at 04:51 PM, John Geiger AF5CC wrote:
Here is one if you can get them to ship it to the UK:
?
?
73 John AF5CC
Thanks John. That's a low price, the last one I saw at a UK dealer was ?699.
?
My PS-31 PSU came from the US, it was in immaculate condition but the courier dropped it and bent the rear panel.
?
--
Mike G8GYW
|
Re: Kenwood SM-230 Station Monitor
Here is one if you can get them to ship it to the UK:
?
?
73 John AF5CC
|
Re: Kenwood SM-230 Station Monitor
?
The AIP function bypasses the Rx RF amplifier and
feeds the Rx signal directly to the mixer, resulting in less gain on Rx...That's
why you see less signal on the SM-230 when the AIP is on...
?
73...Jordan VE6ZT
----- Original Message -----
Sent: Monday, March 24, 2025 7:44
AM
Subject: Re: [Kenwood-Amateur-Radio]
Kenwood SM-230 Station Monitor
Right. It may not bypass it, as I do see faint activity on the scope, but
the signal emitted from the IF out is definitely weaker.
73,
?
David, WU3J
|
Re: Kenwood SM-230 Station Monitor
Right. It may not bypass it, as I do see faint activity on the scope, but the signal emitted from the IF out is definitely weaker.
73,
?
David, WU3J
|
Re: Kenwood SM-230 Station Monitor
I know. I paid about $600 US for one in working order still with original box. I have been looking for one for about 5 years.
73,
?
David, WU3J
|
?
Hi Mike...
?
That's possible, I use the 13 Pin connector that
came with my Kenwoods and wired the connections myself...73...Jordan
VE6ZT
----- Original Message -----
Sent: Monday, March 24, 2025 4:32
AM
Subject: Re: [Kenwood-Amateur-Radio]
TS-870S no TX
On Fri, Mar 14, 2025 at 03:40 PM, Jordan wrote:
I've never seen a
sticker covering any of the rear panel connections in any Kenwood I've seen,
but I haven't owned or worked on an 870. Lots of 850s and 450s, but no
870s...It sounds more like an ACC2 connction problem than a rig
problem...
?
73...Jordan
Hi Jordan, it just occurred to me that maybe the dealer had identified a
fault with the ACC2 socket and put the sticker on to indicate it shouldn't be
used!
?
I've ordered another 13 pin DIN cable from a different supplier to see if
the poor fitting is due to the plug or the socket. I'm guessing the Kenwood
socket is pretty much unobtanium ...
?
--
Mike G8GYW
|
On Fri, Mar 14, 2025 at 03:40 PM, Jordan wrote:
I've never seen a sticker covering any of the rear panel connections in any Kenwood I've seen, but I haven't owned or worked on an 870. Lots of 850s and 450s, but no 870s...It sounds more like an ACC2 connction problem than a rig problem...
?
73...Jordan
Hi Jordan, it just occurred to me that maybe the dealer had identified a fault with the ACC2 socket and put the sticker on to indicate it shouldn't be used!
?
I've ordered another 13 pin DIN cable from a different supplier to see if the poor fitting is due to the plug or the socket. I'm guessing the Kenwood socket is pretty much unobtanium ...
?
--
Mike G8GYW
|
Re: Kenwood SM-230 Station Monitor
I have a TS-870 with matching PSU and loudspeaker, all in immaculate condition.
?
I'd love to get my hands on an SM-230 to complete the lineup but they are like hens' teeth here in the UK.
?
--
Mike G8GYW
|
Re: Kenwood SM-230 Station Monitor
It was too long ago for me to remember. I don't think it bypasses 8.83 since I use AIP and the 8.83 CW filters at times. Bob W4JFA?
I noticed that the band scope display is non functional when the 850 has the Advanced Intercept Point (AIP) enabled. I assume this bypasses the 8.83 MHz IF. Anyone care to have discussion on this?
73,
?
David, WU3J
|
Re: Kenwood SM-230 Station Monitor
I noticed that the band scope display is non functional when the 850 has the Advanced Intercept Point (AIP) enabled. I assume this bypasses the 8.83 MHz IF. Anyone care to have discussion on this?
73,
?
David, WU3J
|
Re: Kenwood SM-230 Station Monitor
I like my 850 too. While I have an Icom IC-7610 (I like the TS-890 too)and appreciate the benefits of SDR and the waterfall display, sometimes I just want to sit down at a radio and have everything accessible from a dedicated knob or button. For example, RF output it a simple knob on the 850, while on the Icom, it is a menu press and use of a multi function knob. This is important as when using the 3CX800A7 based amplifier like the Alpha 87A, RF power needs to be regulated at between 45-55 watts for each band to go full legal.
73,
?
David, WU3J
|
Re: TS-450S BCB sensitivity
?
Group...
?
If there is someone with a TS-450S who can check
the change in sensitivity crossing the 499 to 501khz and 1704.00 to 1706.00khz
points (where the BCB attenuator is switched in and out) I would really
appreciate it...Even better if you have a signal generator and can tell me the
S-Meter changes at those frequencies...
?
I'm trying to limit the number of times I have to
pull the RF board because of the stresses and strains?on the board,
connectors and thru-holes...
?
Thanks...Jordan VE6ZT
----- Original Message -----
Sent: Saturday, March 22, 2025 3:35
PM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
I've made a few "discoveries" about the root of
the BCB?problems I have?been having. Should I post my findings here
or on the 850S page...?
?
73...Jordan VE6ZT
----- Original Message -----
Sent: Friday, March 14, 2025 4:37
PM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Well, I replaced the diodes and it didn't make
any difference...Time to make some dinner...73...Jordan...
----- Original Message -----
Sent: Friday, March 14, 2025 2:27
PM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Ooops...it should read "...which formed part
of the BCB attenuator..."
?
73...Jordan...
----- Original Message -----
Sent: Friday, March 14, 2025 2:23
PM
Subject: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Hi group..
?
I have a 450S which has served me very well
for ~30 years now. Long ago, I jumpered the resistors which formed part
of the BCB, effectively removing the attenuator. It was fine for years
like that, but a few months back I noticed a drop in BCB sensitivity.
?
All other bands are fine...
?
I checked everything I could, replaced the
jumpers and verified the ckt, to no avail.
I checked the control line for
that?band at the 74LS245 and found what I thought was the problem,
so this morning I replaced that IC.
?
It didn't solve the problem. The only other
thing I can think of is that one of the 2 RLS135 diodes for that band
might be flaky so I checked them as diodes and they test
fine.
?
Is it possible that these diodes might
operate fine for DC but not for RF...?
?
I think I'll replace those two diodes and
check again, but this has me a little stumped...
?
73...Jordan
VE6ZT
|
Re: TS-450S BCB sensitivity
Hi David...
?
I'm not finished my investigation...I'll need
another day or three...73...Jordan VE6ZT
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Sunday, March 23, 2025 6:09
AM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Jordan,
I'd place your findings here. What did you find?
|
Re: TS-450S BCB sensitivity
Jordan,
I'd place your findings here. What did you find?
|
Re: Kenwood SM-230 Station Monitor
David, A good friend had the 850 and sold it to me when the 870 came out. I've had it ever since. I love the 850. I do have the digital recording unit in it which I had recently replaced the back up battery in. I also have three CW filters & the voice module to announce the frequency.
There's only one thing I wish it had is adjustable cw side tone from the front panel. I know there's a mod for that however it only adjusts the audio from it's internal setting and lower. With headphones the audio level is fine.? Regardless of the AF, the side tone is always at the same level. Some designer missed the boat on that one.
Bob W4JFA?
Thanks Tom.
?
?I just verified that the Band scope function is working as well. I am enjoying dimming the lights and tuning around the band as well as using the other SM-230 functions. It makes a nice light show. While I respect the latest SDR radios and have one from one of the big three (Kenwood/Icom/Yaesu), I still enjoy the TS-850 which is the pinnacle of solid state and the PL / cystal controlL.
?
I bought the TS-850 new in 1992, but am enjoying buying all the filters for it that I could never afford then new, but snatched up on EBay.
?
In my TS-850S I have:
DRU-2 digital recorder
Filters fo2 8.83 mhz, 1.8khz, 270 hz
Filters for 455, 500 hz
AT850 Antenna tuner
?
I am using a HAMPlus AS-61WL to interface up to 3 radios to 6 antennas as well as an amplifier and tuner seamlessly. I am planning on adding the RigSelect Pro Transceiver Switch to handle switching my Heil headset among the 3 radios. Both radios are interfaced to my logging software so I can switch between rigs during a contest depending on mood. Eventually, I want to add an older tube type radio (ex: Collins, Drake, etc) to the array so I can have fun across all eras.
73,
?
David, WU3J
?
|
Re: Kenwood SM-230 Station Monitor
Thanks Tom.
?
?I just verified that the Band scope function is working as well. I am enjoying dimming the lights and tuning around the band as well as using the other SM-230 functions. It makes a nice light show. While I respect the latest SDR radios and have one from one of the big three (Kenwood/Icom/Yaesu), I still enjoy the TS-850 which is the pinnacle of solid state and the PL / cystal controlL.
?
I bought the TS-850 new in 1992, but am enjoying buying all the filters for it that I could never afford then new, but snatched up on EBay.
?
In my TS-850S I have:
DRU-2 digital recorder
Filters fo2 8.83 mhz, 1.8khz, 270 hz
Filters for 455, 500 hz
AT850 Antenna tuner
?
I am using a HAMPlus AS-61WL to interface up to 3 radios to 6 antennas as well as an amplifier and tuner seamlessly. I am planning on adding the RigSelect Pro Transceiver Switch to handle switching my Heil headset among the 3 radios. Both radios are interfaced to my logging software so I can switch between rigs during a contest depending on mood. Eventually, I want to add an older tube type radio (ex: Collins, Drake, etc) to the array so I can have fun across all eras.
73,
?
David, WU3J
?
|
Re: TS-450S BCB sensitivity
?
I've made a few "discoveries" about the root of the
BCB?problems I have?been having. Should I post my findings here or on
the 850S page...?
?
73...Jordan VE6ZT
----- Original Message -----
Sent: Friday, March 14, 2025 4:37
PM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Well, I replaced the diodes and it didn't make
any difference...Time to make some dinner...73...Jordan...
----- Original Message -----
Sent: Friday, March 14, 2025 2:27
PM
Subject: Re: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Ooops...it should read "...which formed part of
the BCB attenuator..."
?
73...Jordan...
----- Original Message -----
Sent: Friday, March 14, 2025 2:23
PM
Subject: [Kenwood-Amateur-Radio]
TS-450S BCB sensitivity
Hi group..
?
I have a 450S which has served me very well
for ~30 years now. Long ago, I jumpered the resistors which formed part of
the BCB, effectively removing the attenuator. It was fine for years like
that, but a few months back I noticed a drop in BCB sensitivity.
?
All other bands are fine...
?
I checked everything I could, replaced the
jumpers and verified the ckt, to no avail.
I checked the control line for that?band
at the 74LS245 and found what I thought was the problem, so this morning I
replaced that IC.
?
It didn't solve the problem. The only other
thing I can think of is that one of the 2 RLS135 diodes for that band
might be flaky so I checked them as diodes and they test
fine.
?
Is it possible that these diodes might
operate fine for DC but not for RF...?
?
I think I'll replace those two diodes and
check again, but this has me a little stumped...
?
73...Jordan VE6ZT
|
Re: Kenwood SM-230 Station Monitor
David-
Sorry- I misread your post title.? My monitor is a 220. You have the spiffy updated 230! My comment on the caps may not apply to your new-fangled? model.? I apologize for any confusion I may have caused.
73,
Tom ai4th
|
Bob
David
Tom ai4th