What is the electrical behaviour of the aluminium jointing compound?
@petermiles65577 күн бұрын
Due to aluminium oxidation all aluminium electrical joints need to have at least grease, however the jointing compound is specifically for electrical connections.
@MrCuddlyable7 күн бұрын
@@petermiles6557 So you don't know the electrical characteristics of the aluminium jointing compound? Are you sure it isn't thermal grease for heatsinks?
@gregwmanning8 күн бұрын
Great video. Do you have a cross pole loss with the two standard dipoles?
@petermiles65577 күн бұрын
Yes and it is similar, but can't recall the reading as it was a while back when I first started trying to measure antenna gain.
@debohannan43159 күн бұрын
Do you need a choke on this antenna ?
@debohannan43159 күн бұрын
Wht is the common mode current look like?
@garyb479 күн бұрын
Peter, An enjoyable video, and an antenna worth playing with. A few construction points for future builds - 1. use stainless steel wool to polish aluminium, steel wool leaves minute pieces ofr steel embedded in the surface and will rust over time; 2. to get a better electrical connection between the N connector centre pin and the stainless rod, tin the stainless with silver solder first then use your tin/lead solder to the centre pin rather than using a crimped joint between copper and stainless; when riveting, especially on the small disc, put each rivet in and only clench it with the first bite until you have all the rivets in place. This allows you to more easily rotate the plate to align everything before completing the rivet process. Thanks for the though provocation with this build.
@petermiles65577 күн бұрын
All noted and thanks for the feedback. Regards
@damienforestier417810 күн бұрын
Interesting antenna which differs from the « standard » 3 elements. I would like to compare gain and results of a 3 element to 5 element design…
@RogierYou10 күн бұрын
Excellent build!
@deanberglund233212 күн бұрын
Thanks for this video and project. I would love to see how well this works in a real application such as satellites or the ISS repeater.
@G0NMY13 күн бұрын
So with the antenna appearing inductive could you not add make the driven plate larger and lower it closer to the cold end disc to increase capacitance, or maybe use a couple of disks mounted below the driven end.? Just an idea, also where each petal overlaps the next, would making the overlap a bit more not increase capacitance? Just an idea, Think I will have a go at building one and see what happens thanks for the video, very interesting.
@aschlack888913 күн бұрын
Thank you for the video. 73
@ghlscitel671414 күн бұрын
Impressive results I made a "Big Wheel" antenna for 2m in 1968 consisting of 2 storeys with 3 active elements each. Though I only had a voltmeter, a self-made transmitter/receiver, and a lightbulb with a loop to detect HF, It worked and I had several QSOs with them.
@robertwebb558615 күн бұрын
i would love to see that for 10meters .......Good Video Peter
@petermiles655714 күн бұрын
Why not 80m hi hi. I built a 3 petal clover leaf antenna for 2m and that seems large. I like 70cm for antenna experimenting as the size is more manageable while not being too fiddly.
@kennethschultz646514 күн бұрын
@@petermiles6557 me2 .. its a """handy size"""
@fitcher-armchair-sleuth15 күн бұрын
Such an interesting antenna. Enjoyed your video on it's construction. Well done!
@petermiles655714 күн бұрын
Thanks and I have some more interesting antennas in the works for 70cm
@Lindsay105016 күн бұрын
I have been studying your prior build very recently. Very inspirational, in my build I used a 3d print to take the place of the epoxy and set my gap . Thank you for your efforts MW0IXS
@petermiles655710 күн бұрын
Would be keen to see your 3D print solution.
@youtubeaccount93117 күн бұрын
is there horizontal gain or is it pretty even across elevations?
@petermiles655714 күн бұрын
No, it has more gain towards the horizon. At the end of the video you can see it held a good signal right down to 0 degrees. That said it has more of a sky view than I thought it would have, so maybe good for satellites. More testing and experience required.
@REXOB917 күн бұрын
Awesome looking antenna!
@petermiles655714 күн бұрын
Thanks! The guys that I built the original antenna for the 70cm beacon said the same.
@kennethschultz646517 күн бұрын
ooh btw .. great work.. greetings from DENMARK vy 7 3 de OZ1*** since 1980 i hawed build a arial or 2 .. and now i build collinear for LoRa 868MHz 6dbd 9Dbd working on a 12DBd
@petermiles655714 күн бұрын
I enjoy antenna building and testing, Always looking for an unusual design to have a go at....
@kennethschultz646517 күн бұрын
it funny enough, did not look on the smith card/map as the 5 bladed had biggest area?? but the 3 leaf looked like more area covered .. not as outspoken in the " 3 fingers " as the 5 Finger (death punch .. som body will get the small joke) the 5 finger leaf has way more gain on end of fingers but lot of empty space in between fingers and befor you told of the air capacitor i called it.. was the smith wrong or did i read smith right??
@petermiles655714 күн бұрын
Yes; I think the advantage of the 5 petal clover leaf is less empty spaces between fingers. I adjusted the plate spacing for the lowest SWR, however the Smith Chart still shows the antenna is a bit inductive.
@ElPasoTubeAmps17 күн бұрын
Very nice build. 73
@alessioschiavone389818 күн бұрын
thank you for this very informative video, beautiful. only a little remark but that s my taste: a lightbulb with a small resistor would look more classy in this old rig
@alessioschiavone389818 күн бұрын
it packs alot more stuff inside than my ts 440
@alessioschiavone389818 күн бұрын
and also sounds cleaner in receive
@richardmillican7733Ай бұрын
Just watched your Kenwood TS430 repair service video Just purchased one cheap cheap off Ebay. Front panel is dead, but display unit working ok! Hopefully it'll be an easy fix! Otherwise its fully filtered and has the FM board
@petermiles6557Ай бұрын
Great radio and worth getting going. Also look at replacing electrolytic caps.
@cqdx1677Ай бұрын
İ had diassembled a lithium battery socket-nest from a computer board. İ welded it on Ts50 memory plate..if this battery finishes too i can change new battery without welding .
@CT1JRZАй бұрын
Nice job!
@ciaoitalia683Ай бұрын
Hello, I bought this radio recently on eBay, everything works, but there is no sound at all, it's deaf as hell, I'm devastated, I don't know what to do, or maybe I don't know how to turn something on?
@vk6xt6342 ай бұрын
Pretty lightweight tower...important to keep the guy wires in good shape !
@cqdx16772 ай бұрын
Kenwood 430 and 440 are the best solid state amateur radios ever made
@petermiles65572 ай бұрын
Agree, just need to keep on top of the maintenance.
@alessioschiavone389818 күн бұрын
yeasu 990 does not agree
@el84xx872 ай бұрын
To bend the tube you can fill it with silver sand that you use for a bird cage, tape the end of the tube, fill it, tape the other end and bend it.
@Ancenium2 ай бұрын
Peter this footage is amazing, you have beautifully captured this amazing site. I would love to talk to you about the opportunity to use the footage
@petermiles65572 ай бұрын
Happy for you to use the footage. You came include credit if that is practical, Are you a local?
@Ancenium2 ай бұрын
@@petermiles6557 Thank you mate that would be superb! We would be more than happy to credit you and I will contact you when it's out for you to see it as well. I am originally from Victoria, but I spent 5 years in Perth at University, exploring when I could. So I'm somewhat a local I suppose
@davidnudelman71453 ай бұрын
Hi Peter. I have a ts-430 with FM board installed. When I push the fm mode button, the tuning display goes blank except for the last digit, which will display from 1 to 8 if the tuning knob is rotated. I have tried a 2nd FM-430, same thing. Your thoughts? 73's KJ7TSM
@mrtechie68103 ай бұрын
Kindly advise: I extracted the output filter board of a TS-430S to work on it. Issues: 1. Intermittent low rx (probably "dirty" relays). It appears they are all sealed (except the tx/tx relay). I tried using a "wetting voltage" as described in a Kenwood service bulletin, but there is still intermittent loss of rx, especially on 10m. 2. One of the inductors (L41) is shorted. 3. How do you test a diac (D18)? (It reads short circuit in both directions.) Apparently it is for overload/surge protection. 4. The S meter reads extremely low. I failed to recalibrate S9 (even with the trim at maximum, it doesn't reach 9).
@mgcroce553 ай бұрын
hello... all the Yamahas RXV have the famous STK?? thanks
@williamogilvie69093 ай бұрын
I don't believe this procedure accomplishes anything. Firstly, there is only 1 relay on the RF Unit board of the TS430S. When the radio is in receive mode, there is a 47k ohm resistor to ground in each of the receive filters. They all have PIN diodes, which serve the same purpose as a relay. Maybe earlier models of the TS430S used relays instead, but I don't know where they would go and there is no indication of those relays in the service manual. I suggest that anyone thinking about doing this procedure to first remove the bottom panel of their radio and take a good look at the large PCB on the underside of the radio. Mine only has one relay. I am going to replace it with the OEM relay, a Fujitsu FBR211A. Other possible causes for desense in this radio are not enough drive for RL1, incorrect PIN diode bias, and defective PIN diodes. During receive RL1 is actuated. Inadequate drive may leave the contacts separated or just barely touching. In that case there is still a signal path from the antenna connector to the input filters through a 470 ohm resistor. The AGC will take over, but not enough to overcome the desense. I have noticed that when my TS430S goes into desense on one band, it does the same on all other bands. So that would tend to rule out defective PIN diodes. I think the desense problem many see with this radio is caused by RL1 dropping out due to increased internal friction caused by age. OK, I took a closer look at the block diagram and schematics in the TS430S User Manual and see how the transmit low pass filters are also used on receive; and that is where all those relays are. However I am still not convinced this procedure accomplishes anything. There is a 100 μH inductor, L41, right next to RL1-1 on the Filter Unit. This inductor is connected to the RA pin, which goes to the antenna center pin and the other side of the inductor goes to ground. So the 500 mA just goes through that inductor, dissipating most of the power. The relays in the Filter Unit have to handle 100 Watts on transmit. If the receive contacts get dodgy so easily, why doesn't it behave worse on transmit?
@mrtechie68103 ай бұрын
The M.CH button is intermittent. Have you seen this? Any idea how to clean/fix?
@mrtechie68103 ай бұрын
Rx is intermittently deaf on 60m/80m. I'll check the bandpass relays.
@mrtechie68103 ай бұрын
Thanks! ❤
@calorluis19263 ай бұрын
Boa Noite! Como faço para adquirir um Rádio amador desse?
@ChrisdeJongh4 ай бұрын
I've got a Rx-v350, when a speaker is plugged into the left rear channel, the amp turns off (when intermittently connecting the left rear speaker a loud hissing noise is heard) Busy troubleshooting and this video gave me a idea where to start looking. Will update as I make progress
@adamcooper96574 ай бұрын
I worked at this base in 1997..👍
@johnbourke74674 ай бұрын
well that was an interesting climb
@n5ifi4 ай бұрын
Nice job. If I was going to build a Tee, I would definitely provide a couple of vacuum relays in the circuit to short out either capacitor when tuning coaxial fed antennas. That would give you a low pass and high pass L to go with the T. The L is more efficient and unbalanced like coax. Most of the time when you are tuning a coax antenna you don't need much in values. Just a thought. 73
@joefoss72975 ай бұрын
Can you program my T800 UHF repeater??
@user-ib7vm8ch1c5 ай бұрын
hello dear peter. following your post I repaired my Yamaha rx v 557 amplifier. I want to thank you for the post and for showing something else compared to others. all the best.
@stevec67235 ай бұрын
Was stationed there 1972 - 1973, very hot in the summer, we drank Swan Lager to keep cool.
@super-85 ай бұрын
haha same issue i have to on same radio type kzread.info/dash/bejne/pH-Jp7qdmse1ksY.html
@tf72745 ай бұрын
First thing to do is to grab a heavy book and prop it against the band switch...let it cycle for 15 minutes...
@Alessioalessio-qv1ff5 ай бұрын
440 vs 430 wich is better?
@OpSic666 ай бұрын
C104 is the most common audio failure seen in the TS-450s and TS-690s model. If you have an audio issue, always check that cap first. Most of these radios are now at the age where all capacitors should be checked and replaced as needed. Also take a very good look at the memory battery on the back of the faceplate, if they leak they can cause a lot of damage. They're not too particularly hard to replace either.
@petermiles65576 ай бұрын
Thanks, good advice.
@KJ6EAD6 ай бұрын
Replace the missing screws and attach a label to the case interior indicating the modifications done.
Пікірлер
Thank you for the video Awesome beam 73
What is the electrical behaviour of the aluminium jointing compound?
Due to aluminium oxidation all aluminium electrical joints need to have at least grease, however the jointing compound is specifically for electrical connections.
@@petermiles6557 So you don't know the electrical characteristics of the aluminium jointing compound? Are you sure it isn't thermal grease for heatsinks?
Great video. Do you have a cross pole loss with the two standard dipoles?
Yes and it is similar, but can't recall the reading as it was a while back when I first started trying to measure antenna gain.
Do you need a choke on this antenna ?
Wht is the common mode current look like?
Peter, An enjoyable video, and an antenna worth playing with. A few construction points for future builds - 1. use stainless steel wool to polish aluminium, steel wool leaves minute pieces ofr steel embedded in the surface and will rust over time; 2. to get a better electrical connection between the N connector centre pin and the stainless rod, tin the stainless with silver solder first then use your tin/lead solder to the centre pin rather than using a crimped joint between copper and stainless; when riveting, especially on the small disc, put each rivet in and only clench it with the first bite until you have all the rivets in place. This allows you to more easily rotate the plate to align everything before completing the rivet process. Thanks for the though provocation with this build.
All noted and thanks for the feedback. Regards
Interesting antenna which differs from the « standard » 3 elements. I would like to compare gain and results of a 3 element to 5 element design…
Excellent build!
Thanks for this video and project. I would love to see how well this works in a real application such as satellites or the ISS repeater.
So with the antenna appearing inductive could you not add make the driven plate larger and lower it closer to the cold end disc to increase capacitance, or maybe use a couple of disks mounted below the driven end.? Just an idea, also where each petal overlaps the next, would making the overlap a bit more not increase capacitance? Just an idea, Think I will have a go at building one and see what happens thanks for the video, very interesting.
Thank you for the video. 73
Impressive results I made a "Big Wheel" antenna for 2m in 1968 consisting of 2 storeys with 3 active elements each. Though I only had a voltmeter, a self-made transmitter/receiver, and a lightbulb with a loop to detect HF, It worked and I had several QSOs with them.
i would love to see that for 10meters .......Good Video Peter
Why not 80m hi hi. I built a 3 petal clover leaf antenna for 2m and that seems large. I like 70cm for antenna experimenting as the size is more manageable while not being too fiddly.
@@petermiles6557 me2 .. its a """handy size"""
Such an interesting antenna. Enjoyed your video on it's construction. Well done!
Thanks and I have some more interesting antennas in the works for 70cm
I have been studying your prior build very recently. Very inspirational, in my build I used a 3d print to take the place of the epoxy and set my gap . Thank you for your efforts MW0IXS
Would be keen to see your 3D print solution.
is there horizontal gain or is it pretty even across elevations?
No, it has more gain towards the horizon. At the end of the video you can see it held a good signal right down to 0 degrees. That said it has more of a sky view than I thought it would have, so maybe good for satellites. More testing and experience required.
Awesome looking antenna!
Thanks! The guys that I built the original antenna for the 70cm beacon said the same.
ooh btw .. great work.. greetings from DENMARK vy 7 3 de OZ1*** since 1980 i hawed build a arial or 2 .. and now i build collinear for LoRa 868MHz 6dbd 9Dbd working on a 12DBd
I enjoy antenna building and testing, Always looking for an unusual design to have a go at....
it funny enough, did not look on the smith card/map as the 5 bladed had biggest area?? but the 3 leaf looked like more area covered .. not as outspoken in the " 3 fingers " as the 5 Finger (death punch .. som body will get the small joke) the 5 finger leaf has way more gain on end of fingers but lot of empty space in between fingers and befor you told of the air capacitor i called it.. was the smith wrong or did i read smith right??
Yes; I think the advantage of the 5 petal clover leaf is less empty spaces between fingers. I adjusted the plate spacing for the lowest SWR, however the Smith Chart still shows the antenna is a bit inductive.
Very nice build. 73
thank you for this very informative video, beautiful. only a little remark but that s my taste: a lightbulb with a small resistor would look more classy in this old rig
it packs alot more stuff inside than my ts 440
and also sounds cleaner in receive
Just watched your Kenwood TS430 repair service video Just purchased one cheap cheap off Ebay. Front panel is dead, but display unit working ok! Hopefully it'll be an easy fix! Otherwise its fully filtered and has the FM board
Great radio and worth getting going. Also look at replacing electrolytic caps.
İ had diassembled a lithium battery socket-nest from a computer board. İ welded it on Ts50 memory plate..if this battery finishes too i can change new battery without welding .
Nice job!
Hello, I bought this radio recently on eBay, everything works, but there is no sound at all, it's deaf as hell, I'm devastated, I don't know what to do, or maybe I don't know how to turn something on?
Pretty lightweight tower...important to keep the guy wires in good shape !
Kenwood 430 and 440 are the best solid state amateur radios ever made
Agree, just need to keep on top of the maintenance.
yeasu 990 does not agree
To bend the tube you can fill it with silver sand that you use for a bird cage, tape the end of the tube, fill it, tape the other end and bend it.
Peter this footage is amazing, you have beautifully captured this amazing site. I would love to talk to you about the opportunity to use the footage
Happy for you to use the footage. You came include credit if that is practical, Are you a local?
@@petermiles6557 Thank you mate that would be superb! We would be more than happy to credit you and I will contact you when it's out for you to see it as well. I am originally from Victoria, but I spent 5 years in Perth at University, exploring when I could. So I'm somewhat a local I suppose
Hi Peter. I have a ts-430 with FM board installed. When I push the fm mode button, the tuning display goes blank except for the last digit, which will display from 1 to 8 if the tuning knob is rotated. I have tried a 2nd FM-430, same thing. Your thoughts? 73's KJ7TSM
Kindly advise: I extracted the output filter board of a TS-430S to work on it. Issues: 1. Intermittent low rx (probably "dirty" relays). It appears they are all sealed (except the tx/tx relay). I tried using a "wetting voltage" as described in a Kenwood service bulletin, but there is still intermittent loss of rx, especially on 10m. 2. One of the inductors (L41) is shorted. 3. How do you test a diac (D18)? (It reads short circuit in both directions.) Apparently it is for overload/surge protection. 4. The S meter reads extremely low. I failed to recalibrate S9 (even with the trim at maximum, it doesn't reach 9).
hello... all the Yamahas RXV have the famous STK?? thanks
I don't believe this procedure accomplishes anything. Firstly, there is only 1 relay on the RF Unit board of the TS430S. When the radio is in receive mode, there is a 47k ohm resistor to ground in each of the receive filters. They all have PIN diodes, which serve the same purpose as a relay. Maybe earlier models of the TS430S used relays instead, but I don't know where they would go and there is no indication of those relays in the service manual. I suggest that anyone thinking about doing this procedure to first remove the bottom panel of their radio and take a good look at the large PCB on the underside of the radio. Mine only has one relay. I am going to replace it with the OEM relay, a Fujitsu FBR211A. Other possible causes for desense in this radio are not enough drive for RL1, incorrect PIN diode bias, and defective PIN diodes. During receive RL1 is actuated. Inadequate drive may leave the contacts separated or just barely touching. In that case there is still a signal path from the antenna connector to the input filters through a 470 ohm resistor. The AGC will take over, but not enough to overcome the desense. I have noticed that when my TS430S goes into desense on one band, it does the same on all other bands. So that would tend to rule out defective PIN diodes. I think the desense problem many see with this radio is caused by RL1 dropping out due to increased internal friction caused by age. OK, I took a closer look at the block diagram and schematics in the TS430S User Manual and see how the transmit low pass filters are also used on receive; and that is where all those relays are. However I am still not convinced this procedure accomplishes anything. There is a 100 μH inductor, L41, right next to RL1-1 on the Filter Unit. This inductor is connected to the RA pin, which goes to the antenna center pin and the other side of the inductor goes to ground. So the 500 mA just goes through that inductor, dissipating most of the power. The relays in the Filter Unit have to handle 100 Watts on transmit. If the receive contacts get dodgy so easily, why doesn't it behave worse on transmit?
The M.CH button is intermittent. Have you seen this? Any idea how to clean/fix?
Rx is intermittently deaf on 60m/80m. I'll check the bandpass relays.
Thanks! ❤
Boa Noite! Como faço para adquirir um Rádio amador desse?
I've got a Rx-v350, when a speaker is plugged into the left rear channel, the amp turns off (when intermittently connecting the left rear speaker a loud hissing noise is heard) Busy troubleshooting and this video gave me a idea where to start looking. Will update as I make progress
I worked at this base in 1997..👍
well that was an interesting climb
Nice job. If I was going to build a Tee, I would definitely provide a couple of vacuum relays in the circuit to short out either capacitor when tuning coaxial fed antennas. That would give you a low pass and high pass L to go with the T. The L is more efficient and unbalanced like coax. Most of the time when you are tuning a coax antenna you don't need much in values. Just a thought. 73
Can you program my T800 UHF repeater??
hello dear peter. following your post I repaired my Yamaha rx v 557 amplifier. I want to thank you for the post and for showing something else compared to others. all the best.
Was stationed there 1972 - 1973, very hot in the summer, we drank Swan Lager to keep cool.
haha same issue i have to on same radio type kzread.info/dash/bejne/pH-Jp7qdmse1ksY.html
First thing to do is to grab a heavy book and prop it against the band switch...let it cycle for 15 minutes...
440 vs 430 wich is better?
C104 is the most common audio failure seen in the TS-450s and TS-690s model. If you have an audio issue, always check that cap first. Most of these radios are now at the age where all capacitors should be checked and replaced as needed. Also take a very good look at the memory battery on the back of the faceplate, if they leak they can cause a lot of damage. They're not too particularly hard to replace either.
Thanks, good advice.
Replace the missing screws and attach a label to the case interior indicating the modifications done.