https://www.ahrdf.net/forum/ Tue, 26 May 2026 08:53:06 +0000 MyBB https://www.ahrdf.net/forum/showthread.php?tid=1434 Sat, 06 Jul 2024 11:35:59 +0000 VK4CCV]]> https://www.ahrdf.net/forum/showthread.php?tid=1434
This is more focused towards the people who may be familiar with both the Yaesu FTDX101D and Icom IC7610.

I currently have a FTDX5000MP which I am happy with, but as technology has improved, I'd like to get into rigs that are Software Derived.

From what I have reduced it down to is either the FTDX101D or the IC7610, which from what I understand are very evenly matched.

My focus is based around Noise Reduction.

For those who know both, what's your opinion?


Pete DU7/VK4CCV]]>
This is more focused towards the people who may be familiar with both the Yaesu FTDX101D and Icom IC7610.

I currently have a FTDX5000MP which I am happy with, but as technology has improved, I'd like to get into rigs that are Software Derived.

From what I have reduced it down to is either the FTDX101D or the IC7610, which from what I understand are very evenly matched.

My focus is based around Noise Reduction.

For those who know both, what's your opinion?


Pete DU7/VK4CCV]]> https://www.ahrdf.net/forum/showthread.php?tid=1409 Tue, 16 Apr 2024 21:48:12 +0000 VK4JRH]]> https://www.ahrdf.net/forum/showthread.php?tid=1409
The manual says: "PHONES Jack: A 1/4-inch, 3-contact jack accepts either monaural or stereo headphones with 2- or 3-contact plugs. When a plug is inserted, the loudspeaker is disabled"

So, I purchased a stereo 6.5mm plug with 3.5mm jack on the back and and with it inserted in the rig and a 3.5mm stereo plug (cable) inserted into it (with 2.5mm plug on the other end of the cable) and the 2.5mm plug, plugged into the the headphones, to my dismay with the audio turned up, there was no audio!

I found that if I pulled the 6.5mm plug half way out of the rig, I would get audio in the headphones, but it was dodgy!

Am I missing something here??? Is the jack on the rig dodgy? Should I go all mono? 

Thanks in advance for any help.

John.]]>
The manual says: "PHONES Jack: A 1/4-inch, 3-contact jack accepts either monaural or stereo headphones with 2- or 3-contact plugs. When a plug is inserted, the loudspeaker is disabled"

So, I purchased a stereo 6.5mm plug with 3.5mm jack on the back and and with it inserted in the rig and a 3.5mm stereo plug (cable) inserted into it (with 2.5mm plug on the other end of the cable) and the 2.5mm plug, plugged into the the headphones, to my dismay with the audio turned up, there was no audio!

I found that if I pulled the 6.5mm plug half way out of the rig, I would get audio in the headphones, but it was dodgy!

Am I missing something here??? Is the jack on the rig dodgy? Should I go all mono? 

Thanks in advance for any help.

John.]]> https://www.ahrdf.net/forum/showthread.php?tid=1399 Tue, 19 Mar 2024 23:18:59 +0000 VK4ADC]]> https://www.ahrdf.net/forum/showthread.php?tid=1399
Google searches produced a number of results but the most promising was at https://iz0egm.jimdofree.com/repairs-or-mods/icom-7400/ 
It became apparent that this is a common issue with several models that presumably use the same or similar circuitry.

In due course I opened up the 7400, took off the front panel assembly, disassembled that to get down to the area on the PCB where the backlight inverter was and, sure enough, the 2SB1202/Q302 (on logic unit) was discoloured as was the PCB around it.  I used a heat gun to remove Q302 and even the adjacent PCB was showing signs of heat stress.  I doubted that I could cleanly install another SMD power transistor.

I wasn't going to buy a "backlight repair kit" at an inflated price from eBay and I have lots of bits on hand so I replaced the 10uF electro (C302) with a standard single-ended leaded type, the 47uF (C303) was replaced with a low-ESR standard leaded variety.  The replacement for Q302 - that 2SB1202 - opened up a few issues due to parts non-availability. The IZ0 article mentioned a BDX54C as an alternative but these days even those aren't available. You have to remember that many semis are no longer manufactured due to changes in appliances' manufacturing techniques, so it becomes a matter of cross-checking data sheets as well as suppliers' product availabilities..

I finally settled on a TIP42C TO-220 style PNP transistor, drilled a hole through the side of the tinplate shield, used a flat insulating washer plus a nylon isulator that the 3mm screw passed though and then retained with a nut inside the tinplate box. Oh, and did I mention that I used heat transfer silicon grease between the insulating washer and the back of the TIP42C and the washer and again between the washer and the tinplate.  This process allows the large surface area of the tinplate box to act as a large (though thin) metal heatsink. The 'B-C-E' leads were jumpered across to the PCB pads with short lengths of single-strand copper wire.

So, in effect I did the IZ0EGM repair - but without using SMD parts.   

The result was that I now have the 7400 with a functioning backlight. 

Doug VK4ADC]]>
Google searches produced a number of results but the most promising was at https://iz0egm.jimdofree.com/repairs-or-mods/icom-7400/ 
It became apparent that this is a common issue with several models that presumably use the same or similar circuitry.

In due course I opened up the 7400, took off the front panel assembly, disassembled that to get down to the area on the PCB where the backlight inverter was and, sure enough, the 2SB1202/Q302 (on logic unit) was discoloured as was the PCB around it.  I used a heat gun to remove Q302 and even the adjacent PCB was showing signs of heat stress.  I doubted that I could cleanly install another SMD power transistor.

I wasn't going to buy a "backlight repair kit" at an inflated price from eBay and I have lots of bits on hand so I replaced the 10uF electro (C302) with a standard single-ended leaded type, the 47uF (C303) was replaced with a low-ESR standard leaded variety.  The replacement for Q302 - that 2SB1202 - opened up a few issues due to parts non-availability. The IZ0 article mentioned a BDX54C as an alternative but these days even those aren't available. You have to remember that many semis are no longer manufactured due to changes in appliances' manufacturing techniques, so it becomes a matter of cross-checking data sheets as well as suppliers' product availabilities..

I finally settled on a TIP42C TO-220 style PNP transistor, drilled a hole through the side of the tinplate shield, used a flat insulating washer plus a nylon isulator that the 3mm screw passed though and then retained with a nut inside the tinplate box. Oh, and did I mention that I used heat transfer silicon grease between the insulating washer and the back of the TIP42C and the washer and again between the washer and the tinplate.  This process allows the large surface area of the tinplate box to act as a large (though thin) metal heatsink. The 'B-C-E' leads were jumpered across to the PCB pads with short lengths of single-strand copper wire.

So, in effect I did the IZ0EGM repair - but without using SMD parts.   

The result was that I now have the 7400 with a functioning backlight. 

Doug VK4ADC]]> https://www.ahrdf.net/forum/showthread.php?tid=1380 Fri, 02 Feb 2024 20:48:46 +0000 VK5TRM]]> https://www.ahrdf.net/forum/showthread.php?tid=1380
I am wondering if anyone has some information on the Trio communications data module transceiver. I was going to see if I could use them for A.R. The company was based in Melbourne and closed fairly recently as I believe it was bought out by an international company.

The model number is a TC-450SR and it covers 400 to 520Mhz and has the TC-24SR option fitted

Any info on the modules would be appreciated as I have trawled the net and found nothing. I mainly want the connections on the 15 pin D connector but any other info would be great.

Thanks and Regards

Rob VK5TRM]]>
I am wondering if anyone has some information on the Trio communications data module transceiver. I was going to see if I could use them for A.R. The company was based in Melbourne and closed fairly recently as I believe it was bought out by an international company.

The model number is a TC-450SR and it covers 400 to 520Mhz and has the TC-24SR option fitted

Any info on the modules would be appreciated as I have trawled the net and found nothing. I mainly want the connections on the 15 pin D connector but any other info would be great.

Thanks and Regards

Rob VK5TRM]]> https://www.ahrdf.net/forum/showthread.php?tid=1368 Thu, 14 Dec 2023 07:55:28 +0000 VK4CCV]]> https://www.ahrdf.net/forum/showthread.php?tid=1368
As some may be aware, I have a ACOM-1500.

What would be a safe bet for maximum power to be used on modes like RTTY?

Regards

Pete]]>
As some may be aware, I have a ACOM-1500.

What would be a safe bet for maximum power to be used on modes like RTTY?

Regards

Pete]]> https://www.ahrdf.net/forum/showthread.php?tid=1352 Sat, 04 Nov 2023 03:52:08 +0000 VK4CCV]]> https://www.ahrdf.net/forum/showthread.php?tid=1352
What do you believe would be the expected Plate Current of an ACOM-1500 Amp??

I have one which all of a sudden the Power Out at the same low power In has increased (9W).

On 20m I have an output of around 350W with only 9W driving.  This seems now to be across all bands.

I checked the Plate Current and I see around 450mA and 0-10mA Idle.

How is that sounding?


Pete]]>
What do you believe would be the expected Plate Current of an ACOM-1500 Amp??

I have one which all of a sudden the Power Out at the same low power In has increased (9W).

On 20m I have an output of around 350W with only 9W driving.  This seems now to be across all bands.

I checked the Plate Current and I see around 450mA and 0-10mA Idle.

How is that sounding?


Pete]]> https://www.ahrdf.net/forum/showthread.php?tid=1345 Sat, 21 Oct 2023 02:13:44 +0000 VK6NIR]]> https://www.ahrdf.net/forum/showthread.php?tid=1345             I am posting this in hope it may help someone with same issue.Recently bought a TYT MD UV 390 off ebay, and the usb driver absolutely did not install in windows 10 pc.Could  not connect to radio and could not programm. Search web to learn a specific STM Device in DFU mode driver is required.

One another forum   dfudriver   gave a link  https://www.opengd77.com/viewtopic.php?f=19&t=3344 

I downloaded and installed and immediately able to connect.I device manager you can clearly see dfu driver in the very bottom-along with usb drivers.

Hope this helps some one else.I have a copy in case some one needs it.



  dfuse306.jpg (Size: 308.36 KB / Downloads: 494) ]]>             I am posting this in hope it may help someone with same issue.Recently bought a TYT MD UV 390 off ebay, and the usb driver absolutely did not install in windows 10 pc.Could  not connect to radio and could not programm. Search web to learn a specific STM Device in DFU mode driver is required.

One another forum   dfudriver   gave a link  https://www.opengd77.com/viewtopic.php?f=19&t=3344 

I downloaded and installed and immediately able to connect.I device manager you can clearly see dfu driver in the very bottom-along with usb drivers.

Hope this helps some one else.I have a copy in case some one needs it.



  dfuse306.jpg (Size: 308.36 KB / Downloads: 494) ]]> https://www.ahrdf.net/forum/showthread.php?tid=1339 Tue, 26 Sep 2023 05:34:54 +0000 VK3RX]]> https://www.ahrdf.net/forum/showthread.php?tid=1339
Is This 2023's Best Handheld Ham Radio? Wouxun KG-Q10H

The second harmonic issue mentioned thankfully seems to have been fixed with the second batch:

They Fixed it! Wouxun KG-Q10H QUAD-BAND Amateur Radio]]>
Is This 2023's Best Handheld Ham Radio? Wouxun KG-Q10H

The second harmonic issue mentioned thankfully seems to have been fixed with the second batch:

They Fixed it! Wouxun KG-Q10H QUAD-BAND Amateur Radio]]> https://www.ahrdf.net/forum/showthread.php?tid=1312 Tue, 27 Jun 2023 09:21:54 +0000 VK3RX]]> https://www.ahrdf.net/forum/showthread.php?tid=1312
RIP the Baofeng! REPLACED with....

Great colour screen, very readable (unlike my Yaesu VX6), nice size and many other features, but then noted this next video re terrible harmonic suppression:

Watch THIS Before Buying a Talkpod A36Plus!

Yes, you get what you pay for I guess, but a real pity, and hopefully they will fix this with later releases.]]>
RIP the Baofeng! REPLACED with....

Great colour screen, very readable (unlike my Yaesu VX6), nice size and many other features, but then noted this next video re terrible harmonic suppression:

Watch THIS Before Buying a Talkpod A36Plus!

Yes, you get what you pay for I guess, but a real pity, and hopefully they will fix this with later releases.]]> https://www.ahrdf.net/forum/showthread.php?tid=1219 Fri, 05 Aug 2022 20:51:29 +0000 VK2XAX]]> https://www.ahrdf.net/forum/showthread.php?tid=1219 New firmware here...
https://www.icomjapan.com/support/firmwa...Ib26Q1yGcU
regards
Tim]]> New firmware here...
https://www.icomjapan.com/support/firmwa...Ib26Q1yGcU
regards
Tim]]> https://www.ahrdf.net/forum/showthread.php?tid=1204 Sat, 18 Jun 2022 05:41:11 +0000 VK3LU]]> https://www.ahrdf.net/forum/showthread.php?tid=1204 I have Googled but to no avail.
The manuals have no info that I can find.
Thanks in advance.

Nev]]> I have Googled but to no avail.
The manuals have no info that I can find.
Thanks in advance.

Nev]]> https://www.ahrdf.net/forum/showthread.php?tid=1194 Thu, 26 May 2022 14:28:26 +0000 VK6TU]]> https://www.ahrdf.net/forum/showthread.php?tid=1194
My IC-7300 decided to stop transmitting, everything seemed to be working just had no RF out at all.
After checking everything I could the radio was sent to Icom.

After testing they reported the following
Found that IDL circuitry is faulty this may have caused by surge in power supply.

Radio now fixed.

a $5 part was the fault, IC211 which is a INA199A2DCKT,  Current Sense Amplifier
It is located on the PA Unit just below the internal Fuse and has a direct connection to the DC in circuit.

Is part of the IDL circuit and goes to the APC AMP on the main board.
No idea just what it does or what was the cause as been using a battery for the power supply for quite a while now.
Was a easy fix in the end.

Got the internal battery replaced at the same time for only $5.20 extra.

73 from Michael
VK6TU




  IC211.jpg (Size: 87.87 KB / Downloads: 296) ]]>
My IC-7300 decided to stop transmitting, everything seemed to be working just had no RF out at all.
After checking everything I could the radio was sent to Icom.

After testing they reported the following
Found that IDL circuitry is faulty this may have caused by surge in power supply.

Radio now fixed.

a $5 part was the fault, IC211 which is a INA199A2DCKT,  Current Sense Amplifier
It is located on the PA Unit just below the internal Fuse and has a direct connection to the DC in circuit.

Is part of the IDL circuit and goes to the APC AMP on the main board.
No idea just what it does or what was the cause as been using a battery for the power supply for quite a while now.
Was a easy fix in the end.

Got the internal battery replaced at the same time for only $5.20 extra.

73 from Michael
VK6TU




  IC211.jpg (Size: 87.87 KB / Downloads: 296) ]]> https://www.ahrdf.net/forum/showthread.php?tid=1105 Fri, 19 Nov 2021 01:58:51 +0000 VK6ZFG]]> https://www.ahrdf.net/forum/showthread.php?tid=1105
Measurements as taken on my stock standard ICOM IC-7300 Receiver on 18.11.2021

RX Freq mute Spurious mute   Diff
MHz      dBm  MHz       dBm    dB

27.033 -128.8 97.000    -31.4  -97.4
28.033 -125.0 96.000   -30.1  -94.9
29.033 -125.7 95.000 -117.8    -7.9
30.033 -126.3 94.000 -109.4  -16.9
31.033 -124.2 93.000 -108.9  -15.3
32.033 -122.5 92.000 -108.1  -14.4
33.033 -125.6 91.000 -112.7  -12.9
34.033 -125.1 90.000 -113.8  -11.3
35.033 -125.0 89.000 -114.1  -10.9
36.033 -125.8 88.000 -116.1    -9.7
37.033 -126.0 87.000 -116.1    -9.9
38.033 -126.0 86.000 -117.2    -8.8
39.033 -126.0 85.000 -117.8    -8.2
40.033 -126.1 84.000 -118.6    -7.5
41.033 -125.8 83.000 -119.1    -6.7
42.033 -125.6 82.000 -119.2    -6.4
43.033 -125.6 81.000 -120.6    -5.0
44.033 -125.6 80.000 -120.5    -5.1
45.033 -126.9 79.000 -121.7    -5.2
46.033 -125.7 78.000 -120.9    -4.8
47.033 -125.9 77.000 -121.1    -4.8
48.033 -125.5 76.000 -121.3    -4.2
49.033 -124.9 75.000 -120.6    -4.3
50.033 -124.9 74.000   -72.0  -52.9
51.033 -125.3 73.000   -81.3  -44.0
52.033 -125.4 72.000   -87.5  -37.9
53.033 -125.4 71.000   -92.7  -32.7
54.033 -125.2 70.000 -123.0    -2.2
55.033 -125.1 69.000 -122.6    -2.5
56.033 -124.5 68.000 -123.1    -1.4
57.033 -124.5 67.000 -123.2    -1.3
58.033 -124.2 66.000 -123.3    -0.9
59.033 -123.7 65.000 -123.2    -0.5
60.033 spurious 64.000 spurious n/a
61.033 -123.7 63.000 -123.7     0.0

FM mode, mute opening used as reference point.  Only the listed frequency range was measured.  There may be other frequencies.

As can be seen spurious frequency rejection on some frequencies is almost not existent.

Icom specifications only cover the Ham Bands.

On 6M and 4M dedicated RX input filters are used resulting in improved spurious rejection.  On the other frequencies (30-50, 54-70MHz) it uses a much simpler one consisting of two parallel tuned circuits across the antenna line connected together by a series resonant circuit.   These all are resonant on about 45MHz 

It is a good thing analogue CH2 is no longer in service and the Commercial Mid Band no longer has much activity on it. 

https://klop.solutions/aliasing-on-the-i...mment-1444

throws some more light on the IC-7300 to explain its behavior.

It would be interesting to know how other SDR receivers out there compare with the IC-7300. 

73s
Igor
vk6zfg]]>
Measurements as taken on my stock standard ICOM IC-7300 Receiver on 18.11.2021

RX Freq mute Spurious mute   Diff
MHz      dBm  MHz       dBm    dB

27.033 -128.8 97.000    -31.4  -97.4
28.033 -125.0 96.000   -30.1  -94.9
29.033 -125.7 95.000 -117.8    -7.9
30.033 -126.3 94.000 -109.4  -16.9
31.033 -124.2 93.000 -108.9  -15.3
32.033 -122.5 92.000 -108.1  -14.4
33.033 -125.6 91.000 -112.7  -12.9
34.033 -125.1 90.000 -113.8  -11.3
35.033 -125.0 89.000 -114.1  -10.9
36.033 -125.8 88.000 -116.1    -9.7
37.033 -126.0 87.000 -116.1    -9.9
38.033 -126.0 86.000 -117.2    -8.8
39.033 -126.0 85.000 -117.8    -8.2
40.033 -126.1 84.000 -118.6    -7.5
41.033 -125.8 83.000 -119.1    -6.7
42.033 -125.6 82.000 -119.2    -6.4
43.033 -125.6 81.000 -120.6    -5.0
44.033 -125.6 80.000 -120.5    -5.1
45.033 -126.9 79.000 -121.7    -5.2
46.033 -125.7 78.000 -120.9    -4.8
47.033 -125.9 77.000 -121.1    -4.8
48.033 -125.5 76.000 -121.3    -4.2
49.033 -124.9 75.000 -120.6    -4.3
50.033 -124.9 74.000   -72.0  -52.9
51.033 -125.3 73.000   -81.3  -44.0
52.033 -125.4 72.000   -87.5  -37.9
53.033 -125.4 71.000   -92.7  -32.7
54.033 -125.2 70.000 -123.0    -2.2
55.033 -125.1 69.000 -122.6    -2.5
56.033 -124.5 68.000 -123.1    -1.4
57.033 -124.5 67.000 -123.2    -1.3
58.033 -124.2 66.000 -123.3    -0.9
59.033 -123.7 65.000 -123.2    -0.5
60.033 spurious 64.000 spurious n/a
61.033 -123.7 63.000 -123.7     0.0

FM mode, mute opening used as reference point.  Only the listed frequency range was measured.  There may be other frequencies.

As can be seen spurious frequency rejection on some frequencies is almost not existent.

Icom specifications only cover the Ham Bands.

On 6M and 4M dedicated RX input filters are used resulting in improved spurious rejection.  On the other frequencies (30-50, 54-70MHz) it uses a much simpler one consisting of two parallel tuned circuits across the antenna line connected together by a series resonant circuit.   These all are resonant on about 45MHz 

It is a good thing analogue CH2 is no longer in service and the Commercial Mid Band no longer has much activity on it. 

https://klop.solutions/aliasing-on-the-i...mment-1444

throws some more light on the IC-7300 to explain its behavior.

It would be interesting to know how other SDR receivers out there compare with the IC-7300. 

73s
Igor
vk6zfg]]> https://www.ahrdf.net/forum/showthread.php?tid=1089 Tue, 05 Oct 2021 10:07:30 +0000 VK6RO]]> https://www.ahrdf.net/forum/showthread.php?tid=1089
How do you personally adjust the  ALC on CW mode so the meter  shows zero or very little ALC.

I cannot find any mention in the manual on how to set the drive level  for ALC meter on CW mode

tnx

graham vk6ro

e&oe]]>
How do you personally adjust the  ALC on CW mode so the meter  shows zero or very little ALC.

I cannot find any mention in the manual on how to set the drive level  for ALC meter on CW mode

tnx

graham vk6ro

e&oe]]> https://www.ahrdf.net/forum/showthread.php?tid=1047 Sun, 06 Jun 2021 01:07:30 +0000 VK7HH]]> https://www.ahrdf.net/forum/showthread.php?tid=1047 Got a Icom IC-7300 you want to use on digital? I will show you exactly how to setup your Icom IC-7300 for use with WSJT-X and other digital modes such as FT8. 
These are my settings on my radio that work perfectly for WSJT-X.



**See below details on CI-V control and Split**
The baudrate you use in WSJT-X is dependant on if CI-V USB Port is set to Unlink from [Remote] or Link to [Remote].

Link to [Remote] = Use the CI-V Baud Rate on Page 1 of the CI-V menu
Unlink from [Remote = Use the CI-V USB Baud Rate on Page 2 of the CI-V Menu

**When setting Split in WSJT-X**
"Either method (Rig or Fake it) will result in a cleaner transmitted signal, by keeping the Tx audio always in the range 1500 to 2000 Hz so that audio harmonics cannot pass through the Tx sideband filter"]]> Got a Icom IC-7300 you want to use on digital? I will show you exactly how to setup your Icom IC-7300 for use with WSJT-X and other digital modes such as FT8. 
These are my settings on my radio that work perfectly for WSJT-X.



**See below details on CI-V control and Split**
The baudrate you use in WSJT-X is dependant on if CI-V USB Port is set to Unlink from [Remote] or Link to [Remote].

Link to [Remote] = Use the CI-V Baud Rate on Page 1 of the CI-V menu
Unlink from [Remote = Use the CI-V USB Baud Rate on Page 2 of the CI-V Menu

**When setting Split in WSJT-X**
"Either method (Rig or Fake it) will result in a cleaner transmitted signal, by keeping the Tx audio always in the range 1500 to 2000 Hz so that audio harmonics cannot pass through the Tx sideband filter"]]>