Re: FT817 portable go case

开云体育

Yes.

?

??

On 5/17/24 12:45, Kev Tatlow wrote:

Hi all I hope your all well. I wonder if anyone can help me locate a portable solution for my FT817, must have room for the Z817 auto tuner as well as cables etc. Also does anyone know where I can get one in the UK or does anyone know of a secondhand one thats being sold?

I can be contacted at kev.tatlowg4xlo@... or on What's App 07513 155799?

Thanks

Kev?

FT817 portable go case

#114826

Hi all I hope your all well. I wonder if anyone can help me locate a portable solution for my FT817, must have room for the Z817 auto tuner as well as cables etc. Also does anyone know where I can get one in the UK or does anyone know of a secondhand one thats being sold?

I can be contacted at kev.tatlowg4xlo@... or on What's App 07513 155799?

Thanks

Kev?

Re: Collins mechanical filters installation guide for Yaesu FT-8xx radios - update 15May24

#114825

Thanks all for your response to my filter question. I should learn more about them. Maybe some enterprising soul will clone the Collins's units for the ham community.

Joe N1KHB?

Show quoted text

On Fri, May 17, 2024 at 10:45 AM, Petr Ourednik
<indians@...> wrote:

[Edited Message Follows]
Joe,

as Bryan said. They are specific by center frequency, in/out impedances, pinout and daughter board layout and finally size of the package.

Anyway, some radios share the same filters... even across different manufacturers.
Yaesu FT8xx uses as same filters as Yaesu FT-1000/1000MP, AOR 5000 or AOR 7030 or even TenTec Omni VII...
Each manufacturer and seller often re-labeled Collins filter with own code and Aliases but they are still same Collins...

These EMF filters are not as good as crystal filters, but they are still good performers in our radios. (even they are getting old and parameters are changing)

73 - Petr, OK1RP

Re: Mech. Filters for FT-817/8

#114824

No problem, Robert. I am the same staff. hi
Good luck with POTA's!

btw: I am looking for another Yaesu TCXO-9 (only new w/smaller oscillator and not China unit)?

--
73 - Petr, OK1RP

FT-817ND | FT-818ND | FT-857D?

Re: 60dbm Neptune Amplifier + or -

#114823

开云体育

They offer 1 KW amps, probably their first products.

Sorry, no experience with them - good luck, let us know what you come up with - for what it's worth, the eHam reviews look positive...

Ken, N2VIP

Show quoted text

On May 13, 2024, at 10:21, Zack Widup <w9sz.zack@...> wrote:

?
Oh, OK. Seems like a strange name for a company! :-)

Zack W9SZ

On Mon, May 13, 2024 at 8:32?AM abigalcamino via <abigalcamino=[email protected]> wrote:
is the name of the company, with the same url.

They offer? 50w and 100w auto switching qrp amps, hf including 6m.

The amp I am interested is a 50w Neptune.

Virus-free.

Re: Mech. Filters for FT-817/8

robert beswick

#114822

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I have to say I'm sorry, but I'm one of those guys that has to aquire every accessory or gadget for my radio. Has only taken 5 years to collect all the cool stuff. I have even built/constructed an external box for monitoring all parameters while operating.?

Now that I'm retired I will be getting out and doing pota's here in the near future.?

It only takes 3 sizable cases for all the the toys. Again I apologize? but not ready to let go. KA6PSD Robert?

Sent from my T-Mobile 5G Device

Show quoted text

-------- Original message --------

From: "Petr Ourednik via groups.io" <indians@...>

Date: 5/17/24 8:16 AM (GMT-07:00)

To: [email protected]

Subject: Re: [ft817] Mech. Filters for FT-817/8

Robert,

if you will be thinking about selling the W4RT dual filter pack then I will grab it.?
Even the filters maybe not needed (if SSB installed) as I need just the board and 300Hz filter if installed.
I know that it's just fantasy but just in case... :)
Thanks.

73 - Petr, OK1RP

Re: 60dbm Neptune Amplifier + or -

#114821

Hi,

I am also thinking about the Neptun PA for my son (he is using his FT-818ND) so any experiences and suggestion would be greatly appreciated.

Re: Mech. Filters for FT-817/8

#114820

Robert,

if you will be thinking about selling the W4RT dual filter pack then I will grab it.?
Even the filters maybe not needed (if SSB installed) as I need just the board and 300Hz filter if installed.
I know that it's just fantasy but just in case... :)
Thanks.

73 - Petr, OK1RP

Re: Mech. Filters for FT-817/8

#114819

Ronan,

very well said. These filters are a bit nasty in term of spurious images and related artefacts.?
The EMF filters are better in these cases (even although the digital filter has announced far superior shape factor) or even better are crystal filters with better first -30dB skirt and total stop-band rejection ...but these are no available for our FT-8xx radios.

What I can recommend in case of first/last aid is SCAF filter. I used for long time the SCAF filter based on NewEnglandQRP club with LMF100 or LTC1060 (do not use the MF10CN and MF10BN chips which are much noisier) and I was amazed with so simply circuit. It cannot beat EMF or even crystal filters but if you have nothing then try it...

73 - Petr, OK1RP

Re: Collins mechanical filters installation guide for Yaesu FT-8xx radios - update 15May24

#114818
Edited

Joe,

as Bryan said. They are specific by center frequency, in/out impedances, pinout and daughter board layout and finally size of the package.

Anyway, some radios share the same filters... even across different manufacturers.
Yaesu FT8xx uses as same filters as Yaesu FT-1000/1000MP, AOR 5000 or AOR 7030 or even TenTec Omni VII...
Each manufacturer and seller often re-labeled Collins filter with own code and Aliases but they are still same Collins...
These EMF filters are not as good as crystal filters, but they are still good performers in our radios. (even they are getting old and parameters are changing)

73 - Petr, OK1RP

Re: Mech. Filters for FT-817/8

#114817

I have the laserbeam fitted to my 817. It's better than no filter but is far from ideal. It creates images of very strong stations about 1 and a bit kHz away from their true frequency. I can't remember the actual offset as I've not used the radio in a while. This makes it confusing to use in busy conditions. Using the IF shift can mitigate this to some extent. There have been a few times that I've called a station only to realise, after turning off the narrow mode, that I was calling on the image frequency ?.?

The filter also messes with the displayed S meter readings in that they're way higher than they should be with the filter engaged.

As I said, its better than no filter but not by much. A simple external audio CW filter would be just as good, if not better.?

Cheers,?
Ronan
MM0IVR?

Re: Mech. Filters for FT-817/8

robert beswick

#114816

开云体育

I have the lazerbeam installed and works really well.?

I also have the w4rt dual filter pack installed also.

I prefer using the lazerbeam setup.?

Robert KA6PSD?

Sent from my T-Mobile 5G Device

Show quoted text

-------- Original message --------

From: "Peter Burnett via groups.io" <g4bll.peter@...>

Date: 5/16/24 3:26 PM (GMT-07:00)

To: [email protected]

Subject: Re: [ft817] Mech. Filters for FT-817/8

I have just had the Sotabeam filter board fitted so I hope it does what it says on the tin.?

Peter G4BLL

P Burnett

On 16 May 2024, at 21:44, Jeff WN1MB <jwbauer@...> wrote:

? About the only alternative, though its location in the receiver signal chain limits its effectiveness - compared to limiting the IF bandpass.

On 5/16/24 16:18, Peter Burnett via groups.io wrote:
The Sotabeam “Laserbeam digital audio filter fitted to the main board would appear to be a serious alternative, or at least worth considering. 
True or false??
P Burnett

--
Peter Burnett G4BLL

Re: 60dbm Neptune Amplifier + or -

#114815

Thanks for the information Jim. Unfortunately I will not be at the hamfest. However, I do have a question regarding the Neptune.

Will it run off a 12v power supply such as a deep cycle battery?

73

Re: Mech. Filters for FT-817/8

#114814

开云体育

I forgot to mention that a Collins XF-115c has just been sold for ?93 on eBay!?

P Burnett

Show quoted text

On 16 May 2024, at 23:26, Peter Burnett via groups.io <g4bll.peter@...> wrote:

?I have just had the Sotabeam filter board fitted so I hope it does what it says on the tin.?
Peter G4BLL
P Burnett

On 16 May 2024, at 21:44, Jeff WN1MB <jwbauer@...> wrote:
? About the only alternative, though its location in the receiver signal chain limits its effectiveness - compared to limiting the IF bandpass.

On 5/16/24 16:18, Peter Burnett via groups.io wrote:
The Sotabeam “Laserbeam digital audio filter fitted to the main board would appear to be a serious alternative, or at least worth considering. 
True or false??
P Burnett
--
Peter Burnett G4BLL

--
Peter Burnett G4BLL

Re: Mech. Filters for FT-817/8

#114813

开云体育

I have just had the Sotabeam filter board fitted so I hope it does what it says on the tin.?

Peter G4BLL

P Burnett

Show quoted text

On 16 May 2024, at 21:44, Jeff WN1MB <jwbauer@...> wrote:

? About the only alternative, though its location in the receiver signal chain limits its effectiveness - compared to limiting the IF bandpass.

On 5/16/24 16:18, Peter Burnett via groups.io wrote:
The Sotabeam “Laserbeam digital audio filter fitted to the main board would appear to be a serious alternative, or at least worth considering. 
True or false??
P Burnett

--
Peter Burnett G4BLL

Re: Mech. Filters for FT-817/8

#114812

开云体育

About the only alternative, though its location in the receiver signal chain limits its effectiveness - compared to limiting the IF bandpass.

On 5/16/24 16:18, Peter Burnett via groups.io wrote:

Show quoted text

The Sotabeam “Laserbeam digital audio filter fitted to the main board would appear to be a serious alternative, or at least worth considering. 
True or false??
P Burnett

Re: Collins mechanical filters installation guide for Yaesu FT-8xx radios - update 15May24

#114811

Joe,

They can vary between brand/model.? As in this subject line note the 
Yaesu FT-8XX.

They are the same for 817, 818, 857, 897.? I think maybe 847 as well.? 
Definitely not 891 (no filter).

A very key specification is the center frequency of the filter. In this 
case: 455.00kHz center frequency.

72 de Bryan, k0emt

Show quoted text

On 2024-05-16 15:39, Joseph Wonoski via groups.io wrote:
Are Collins filters specific to each brand,/model of radio?

Joe N1KHB

Mech. Filters for FT-817/8

#114810

The Sotabeam “Laserbeam digital audio filter fitted to the main board would appear to be a serious alternative, or at least worth considering. 
True or false??
P Burnett


-- 
Peter Burnett G4BLL

Re: Collins mechanical filters installation guide for Yaesu FT-8xx radios - update 15May24

#114809

Are Collins filters specific to each brand,/model of radio??

Joe N1KHB?

Show quoted text

On Thu, May 16, 2024 at 1:17 PM, Jeff WN1MB
<jwbauer@...> wrote:

Get 'em while you can. The prices will continue to rise as the supply dwindles. And as any real CW op knows, in crowded band conditions a stock 817/818 is torture to operate.

On 5/16/24 12:10, Ham Radio wrote:

Thank you for the updated docs. ?The problem now is that people are asking (and getting) very high prices for these Collins ?filters. ?The used ICOM filters are still very reasonably priced.

Re: Collins mechanical filters installation guide for Yaesu FT-8xx radios - update 15May24

#114808

开云体育

Get 'em while you can. The prices will continue to rise as the supply dwindles. And as any real CW op knows, in crowded band conditions a stock 817/818 is torture to operate.

On 5/16/24 12:10, Ham Radio wrote:

Show quoted text

Thank you for the updated docs. ?The problem now is that people are asking (and getting) very high prices for these Collins ?filters. ?The used ICOM filters are still very reasonably priced.