Re: No transmit function on 2M
Hi the bad thing with mine was I had just got it from eBay, obviously the seller said it was in perfect condition, I could have sent it back, under eBays contract, but it was a good price with a tuner and lipo battery, I did leave him bad feedback, Let me how you get on with it, Dave 2E0DMB?
Hi i found this when my FT817 did not output power on 2m and it was the Diode that had gone bad,
Good Luck, Dave 2E0DMB
so on Pin 8 of Q3003 on the PA Unit is a voltage called V-TX that
switches the output of the PA FINAL thru to the 2 Meter Low Pass Filter.
There it passes thru the Relay RL3001 which for 2Meter is closed from the
moving contact to the Normally Closed (Black) contact which passes the TX
energy on to the Diode D3003 an HSU277 ( Pin Diode ) and from there on to
the ?front or rear Antenna select RL3015.
Other than that, there is another Diode D3005, that enjoys going bad and it
can also cause the problem you are having.
These are both on the bottom (B side) of the PCB.? This diode turns on to
protect the RX when TXing.? This is turned on from pin 4 on the Q3003.
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Re: No transmit function on 2M
Hello and thank you for your response. I studied the schematic this morning and came to the same conclusion, it can only be D3003 or D3005. I located them on the layout and I have to remove the plate to see because of the interior side. I will tell you 73's SEB
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Re: No transmit function on 2M
Hi i found this when my FT817 did not output power on 2m and it was the Diode that had gone bad,
Good Luck, Dave 2E0DMB
so on Pin 8 of Q3003 on the PA Unit is a voltage called V-TX that
switches the output of the PA FINAL thru to the 2 Meter Low Pass Filter.
There it passes thru the Relay RL3001 which for 2Meter is closed from the
moving contact to the Normally Closed (Black) contact which passes the TX
energy on to the Diode D3003 an HSU277 ( Pin Diode ) and from there on to
the ?front or rear Antenna select RL3015.
Other than that, there is another Diode D3005, that enjoys going bad and it
can also cause the problem you are having.
These are both on the bottom (B side) of the PCB. ?This diode turns on to
protect the RX when TXing. ?This is turned on from pin 4 on the Q3003.
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Re: No transmit function on 2M
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Hi John,
You are after rather more power than I am, but because I am walking, the amount of time for the panels to be out of the pack and charging the radio is very limited. (1hr every second day)
It is actually challenging to get panels light enough to be better than carrying more batteries!
The '817 has 3x18650 cells.(149g) The panel is 184g, and actually delivers 12V 1A in direct sun. They are compatible with directly charging 3x LiIon cells with no charge electronics (The BMS will protect against overcharge and the zener protects the radio from overvoltage)
I have used powerfilm panels for work projects a decade ago, but the output is so low they don't charge the battery a useful amount in the time available. (They also seemed to be optimistically specd.)
However I thought I would look at powerfilm again. Using a needs 14 panels, and 5x the area of what I have above. i.e it will be a 1.25m by 270mm area of mylar film.
Weight will be : 5.9*14=82g for the power film. This is a bunch of them so at a minimum we should stick them to some thin nylon. So PF panels with adhesive are 8g, non sil nylon is 50g/m, wires plugs etc 30g
8*14 + 50*0.4 +30g = 129g
So a bit lighter than what I have. From my point of view they are infeasibly large for the power I need given it is often in windy conditions. Again my requirement is driven by only getting one hour of direct sun every two days. If you got to deploy your panels for 4 hours every day it would be a totally different story.
The digikey price of USD547 is a bit prohibitive too...
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Re: Loosening tight screws
Hi this post reminded me that I needed some jis drivers, as I work on radios, Also have yaesu/ICOM /and Kenwood radios, when I worked on my ICOM ic-7000 I fitted new screws as they are very week, and did not use jis screwdriver ?, I got them delivered from Amazon today, just over a ?10 for a 4pc set of drivers, Dave 2E0DMB?
Hi Rich, ? Another trick (other than using the correct JIS driver of course) is to give the screw a slight nip in the clockwise (tightening) direction prior to trying to extract it. ? 73….Eric VK2VE. ? ? I finally decided to attach the side rails that came with my Portable Zero Pack to my 817nd.? The two screws on either side are so tight I can only barely loosen one of them.? The other three are way to tight and I don't want to damage the Phillips head screw.? Does anyone know of a method of loosening screws that are so tight?? Appreciate any and all advice.
73
Rich KB3OMJ
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After buying garbage I now use various PowerFilm panels with a Buddipole power controller John ve3ips Sent with a Palm Pilot @300 baud from a copper a landline
I blog at
Radio: it's not just a hobby, it's a life$$$tyle
Throw a wire in a tree and go make QSO
-- John VE3IPS Radio is a Lifestyle not a Hobby Oprah added the ARRL Handbook to her list
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Are you looking for specifically folding/portable? There are plenty of small/affordable panels available. Try to avoid amorphic unless it's a newer tech. You tend to get much better power per inch out of bi-crystalline or mono-crystalline, even better with CIGS.? I've had good luck watching the local Craigslist or Faecesbook?marketplace. But I also pick them up occasionally on amazon when I can catch a sale.? Eco-Worthy, Renogy, Allto, Future Solar, NewPowa are a few I've gotten. I used to buy Instapark but I don't think they make them anymore. More important than the panels is a good regulator. There's a local mom-and-pop here in Michigan makes great little MPPT regulators (DIY Solar For U), But renogy has a number of PWM and MPPT options available that are reasonably affordable and more reliable than China-no-name. Surprisingly, I've heard really good things about a new little one I just got for basic PWM setup. You see them all over amazon, ebay and aliexpress from multiple sellers. Seems the newest iteration is the 6v/12v 10a version. Here's just one example:?? (you won't get as good of charge rate as you would with a more expensive MPPT controller, but they seem to work pretty good)? Although there is one drawback that I find to be a plus. They have load monitoring and shut down at about 10.5v on the load output. (you can always connect straight to the power source if you want to risk draining a battery lower - these were made for outdoor water pumps for things like fountains, simple plant watering, hydroponic stuff, etc)? They turn back on again when the battery is back to about 12.5v There are some simple, 'in-line' MPPTs that are getting good ratings. I picked up one of these for my RV? but I'm curious about this one also:?? Those don't contain any 'load' output so they won't do any load monitoring for you.
For stuff more elaborate, the low-end entry points for good regulators are Renogy and Victron if you want any kind of power monitoring. These are nice because they have addons which make monitoring wireless (bluetooth) capable but they are still affordable. (although they ream you on the bluetooth addon) . They both seem to make PWM and MPPT versions in multiple amperage ratings.
Next is good power packs or batteries. If going lithium, I recommend LiFePO4 as it will be less prone to 'kaboom' of large lithium poly or lithium ion packs and will recharge much longer. The power per cell is lower, but you usually get more power on their 12v equivalent. (lipo/lion are 3.7 and usually chain 3 cells for 11.1v, lifepo4 are 3.2v and usually chain 4 cells for 12.8v).? On lithiums, try to find cells/packs that have a built in power monitoring / charge protection and that have a good rating.? Otherwise, a good AGM or gel cell lead acid can't be beat for reliability. I have no experience with thiis one, but I just ran into it the other day and I'm curious. They're large, single-cell LiFePO4 but apparently designed so they can be chained in series or parallel (e.g. get 4 of them for a 12v source and connect?+->- on the bridges between - even on LiFePo4 I'd recommend some kind of air spacer between or even a heatsink to keep heat even when charging). Like I say, I have no experience with them but the store seems to have good reviews:? SW
Hi all,
? ?I'm considering a solar panel purchase for portable qrp. Many on the web have sketchy, ambiguous, or contradictory specs. Any guidance would be appreciated. Tnx.?
Joe N1KHB?
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Re: Loosening tight screws
Hot soldering iron tip pressed into the screw can work too, if you need good localization of heat.
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Re: Loosening tight screws
Hi Rich, ? Another trick (other than using the correct JIS driver of course) is to give the screw a slight nip in the clockwise (tightening) direction prior to trying to extract it. ? 73….Eric VK2VE. ?
toggle quoted message
Show quoted text
From: ft817@groups.io <ft817@groups.io> On Behalf Of hermit
Sent: Sunday, April 28, 2024 12:41 AM
To: ft817@groups.io
Subject: [ft817] Loosening tight screws? I finally decided to attach the side rails that came with my Portable Zero Pack to my 817nd.? The two screws on either side are so tight I can only barely loosen one of them.? The other three are way to tight and I don't want to damage the Phillips head screw.? Does anyone know of a method of loosening screws that are so tight?? Appreciate any and all advice.
73
Rich KB3OMJ
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Re: Loosening tight screws
Where can I find the size of the screws on the rig so that I can buy the right screwdriver? There are retailers in ?ire that sell a single screwdriver unit, which is far cheaper than buying a set. 72, Sandip EI7IJB
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Re: Loosening tight screws
Amazon sells JIS screwdrivers.
Lonnie, N9IUI
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Re: Loosening tight screws
Hermit,
JIS drivers are also available on Amazon.? JIS was introduced to circumvent the Phillips drivers patents.? The drivers are not as pointed and so penetrate deeper in the JIDS screw head.? The screws are also a type of binder head so locking hardware is not needed.
--
Al Skierkiewicz
WB9UVJ
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Re: Loosening tight screws
Mike and the group,
Thanks so much for link to McMaster, I definitely will be ordering from them, so much easier than directly from Japan.
Very best regards,
Rick VE1RNM?
Beat me to the punch, Neil! Thanks for informing the 817 group about
JIT screws.
I found out about them "rather inelegantly" back in the 70's
when doing consumer electronics repairs. I have since gotten
religion. ;)
73, Jeff WN1MB
On 4/27/24 13:04, sceadued via wrote:
Hi
It will help if you get a JIS driver.
Yeasu radios don't use Philips, they use JIS screws, you can use a
Philips driver but it isn't the best fit.
this website explains it better than I can.
Good luck.
?Neil
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Re: Loosening tight screws
Beat me to the punch, Neil! Thanks for informing the 817 group about
JIT screws.
I found out about them "rather inelegantly" back in the 70's
when doing consumer electronics repairs. I have since gotten
religion. ;)
73, Jeff WN1MB
On 4/27/24 13:04, sceadued via groups.io wrote:
toggle quoted message
Show quoted text
Hi
It will help if you get a JIS driver.
Yeasu radios don't use Philips, they use JIS screws, you can use a
Philips driver but it isn't the best fit.
this website explains it better than I can.
Good luck.
?Neil
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On 4/27/2024 2:23 PM, Joseph Wonoski via groups.io wrote: I've always used a 7 ah SLA with good results. The weight is manageable for the short carry distances I frequent. If lithium ion ever becomes competitive enough I may transition at some point.
? ?I actually have a 30 watt panel to use but it's rather large and clumsy, so I'm hoping that newer ones are more efficient for the size. I've had this one for decades, but last time I checked it was still living up to the original specs.
? ?Thanks to all for suggestions and observations.
Joe N1KHB You might consider something like this: I have one and find it very well designed.? It has separately switchable 12V and 120VAC (600W) outputs, and a capacity of 250WH. It includes an input for a 12V solar panel for charging (standard XT60 connector) and also has a built in 120VAC charger that is VERY fast.? It can charge it from dead to full in about an hour or less. The front panel displays state of charge and also predicted run time at the current discharge rate. Paul -- Paul Goelz Rochester Hills, MI USA pgoelz@... www.pgoelz.com
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I've always used a 7 ah SLA with good results. The weight is manageable for the short carry distances I frequent. If lithium ion ever becomes competitive enough I may transition at some point. ? ?I actually have a 30 watt panel to use but it's rather large and clumsy, so I'm hoping that newer ones are more efficient for the size. I've had this one for decades, but last time I checked it was still living up to the original specs.? ? ?Thanks to all for suggestions and observations.
Joe N1KHB? ?
On Sat, Apr 27, 2024 at 9:28 AM, Ken N2VIP <ken@...> wrote: The OP is asking about portable QRP usage, so car batteries are right out, SLA are an option but heavy, LiFePO4 batteries are likely a better choice.
As for a solar panel, a three-panel array is not practical, there are quality brands out there, Bioenno seems well-regarded here, but I think there's no way to provide specifications for solar panels given the number of variables involved. I would suggest going with a well-regarded brand, over-provisioning the solar panel to the extent its practical to deploy easily in portable use, and realize that you can't run just off the solar panel - you'll need a battery and the solar panel/array you deploy is just to hopefully maintain the charge on the batteries.
Good luck, please share your decision with us when you decide, Ken, N2VIP On Apr 27, 2024, at 07:43, Joseph Wonoski via groups.io <N1khb@...> wrote:
?SLAs are actually made for deep cycle use. Depth of discharge affects lifespan to a degree however.? ? ?Car batteries are a different animal designed for short duration starting only.
Joe N1KHB? On Sat, Apr 27, 2024 at 5:30 AM, Mike EI9FEB <ei9feb@...> wrote: Many quote the maximum output at solar noon, midsummer, clear sky and the panel angled at the sun.
Obviously this can be even x10 the actual output even on a good day in the other half of the year unless you live closer to or in the tropics.
Three 100W panels, special charging electronics and a suitable battery system. Car batteries are best value but heavy. Li batteries may take deep cycles well. NiMH less tricky, can be similar volume capacity to Li, but much heavier and expensive other than AA size. Lead Acid gel don't like repeated deep discharge.
Likely for a rig the duty cycle is 1:5 unless in a pile-up/contest.·
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Re: Loosening tight screws
I agree on McMaster. They treat all customers the same no matter what size order, and delivery is FAST without special shipping charges. I used them for work and continue to use them for myself.
Joe N1KHB?
On Sat, Apr 27, 2024 at 1:55 PM, Mike Dinolfo <mdinolfo@...> wrote:
Rick:
mcmaster.com sells JIS screwdrivers.?
Mcmaster is an excellent supplier of many things
hardware-related.? I consider their products (tools, materials) to
be of high quality, not inexpensive but not overly expensive
either.? I have no commercial interest in them; just a satisfied
customer.
Mike N4MWP
On 4/27/24 13:40, VE1RNM wrote:
Hi Neil and the group,
Thanks for your post, I never knew JIS existed,
I have never had a problem removing? the screws from yaesu
products but have a lot of screw drivers also! I wonder if
there is a US distributor for this Japanese manufacturer...
Thanks again for the Post and link
Vy 73,
Rick VE1RNM?
Hi
It will help if you get a JIS driver.
Yeasu radios don't use Philips, they use JIS screws, you can
use a Philips driver but it isn't the best fit.
this website explains it better than I can.
Good luck.
?Neil
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Re: Loosening tight screws
VESSEL - ARMOR GRIP? Screwdriver Cross Point 4PC. Set (JISDRIVE) No.550APH4PBU
On Sat, Apr 27, 2024 at 1:55 PM, Mike Dinolfo <mdinolfo@...> wrote:
Rick:
mcmaster.com sells JIS screwdrivers.?
Mcmaster is an excellent supplier of many things
hardware-related.? I consider their products (tools, materials) to
be of high quality, not inexpensive but not overly expensive
either.? I have no commercial interest in them; just a satisfied
customer.
Mike N4MWP
On 4/27/24 13:40, VE1RNM wrote:
Hi Neil and the group,
Thanks for your post, I never knew JIS existed,
I have never had a problem removing? the screws from yaesu
products but have a lot of screw drivers also! I wonder if
there is a US distributor for this Japanese manufacturer...
Thanks again for the Post and link
Vy 73,
Rick VE1RNM?
Hi
It will help if you get a JIS driver.
Yeasu radios don't use Philips, they use JIS screws, you can
use a Philips driver but it isn't the best fit.
this website explains it better than I can.
Good luck.
?Neil
|
Re: Loosening tight screws
Rick:
mcmaster.com sells JIS screwdrivers.?
Mcmaster is an excellent supplier of many things
hardware-related.? I consider their products (tools, materials) to
be of high quality, not inexpensive but not overly expensive
either.? I have no commercial interest in them; just a satisfied
customer.
Mike N4MWP
On 4/27/24 13:40, VE1RNM wrote:
toggle quoted message
Show quoted text
Hi Neil and the group,
Thanks for your post, I never knew JIS existed,
I have never had a problem removing? the screws from yaesu
products but have a lot of screw drivers also! I wonder if
there is a US distributor for this Japanese manufacturer...
Thanks again for the Post and link
Vy 73,
Rick VE1RNM?
Hi
It will help if you get a JIS driver.
Yeasu radios don't use Philips, they use JIS screws, you can
use a Philips driver but it isn't the best fit.
this website explains it better than I can.
Good luck.
?Neil
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Seb5347
John
Sandip EI7IJB
Lonnie Whelan
Al WB9UVJ
Jeff WN1MB
Mike Dinolfo