开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育
Re: Digital readout
Hello, A few months ago, I've started to make a digital readout for this beautiful radio. After a few new versions, it's ready. Because several people asked me for it, I've made a complete kit,
By Marcel, de PA8MA · #310 ·
A network of 3D printer owners the print replacement knobs?
Hello all, As some of you might know, I have designed 3D printable replacement knobs for the FRG-7 switches and have them available through my website ( https://ph2lb.nl/webshop/order.php ) . I
By Lex PH2LB · #309 ·
Re: FRG-7 Current draw using an external 12V PSU
Well the manual says it draws 14VA at 120vac. So to translate that to 12vdc current draw would be:?So 14va*.7 ( .7 is the typ power factor of a std offline ps) = 9.8W of real power. So I = p/v, 9.8/
By Robert O'donnell · #308 ·
Re: FRG-7 Current draw using an external 12V PSU
Hi Guy! Many thanks! 73's / Hans fre. 10. nov. 2023 kl. 21:32 skrev G. Marchal <guy.on5fm@...>:
By Hans Ostnell · #307 ·
Re: FRG-7 Current draw using an external 12V PSU
Hello Hans, Don't worry, the needed current by the Frog is less than 500 mA. I don't use the internal PS of mine since a long time but an external 13.8 V one and I don't need anymore to put the
By G. Marchal · #306 ·
Re: FRG-7 Current draw using an external 12V PSU
Max 250mA with the lights on with normal volume.
By MPX . · #305 ·
FRG-7 Current draw using an external 12V PSU
Hi group, and thanks for having me! Anyone who can tell the current draw for a FRG-7, when using an external 12V PSU? I have a nice linear little PSU, but it's only capable of delivering 0,9 A
By Hans Ostnell · #303 ·
Re: Need more selectivity
The filter board uses diode switching to prevent long signal lines. The diodes on the in/outs of each filter are either forward or reversed biased via a DC voltage to activate, the half rail voltage
By Pentagrid · #302 ·
Re: Need more selectivity
Mike, et al, Thanks for the suggestions and pointing me to some of the mod files - I will definitely check them out.? This is now not as urgent as a couple of days ago as I am waiting delivery of a
By Justin Bowser - KI5GKD · #301 ·
Re: Need more selectivity
I would love the schematics you mentioned. These seem like worthy mods! Thanks, Robert
By Robert Madore · #300 ·
Re: Need more selectivity
Improving the FRG7 selectivity by replacing filters is problematic when going much beyond a 3-4 kC bandwidth and expecting improved SSB reception. The cause is the Yaesu? free running BFO is just not
Re: Need more selectivity
radio west upgraded all their FRG-7 filters before shipping and you had the option of further upgrading of the filter including switchable filters
By MikeM · #298 ·
Re: Need more selectivity
look in the files section for the file Gilfer frg-7 mod, that explains the only way to improve selectivity in the FRG-7 smaller sized filters (based on number of elements) will not require legs to
By MikeM · #297 ·
Re: Need more selectivity
I am *NOT* and FRG-7 expert. I bought one and completely realligned it. Sensitivity is excellent, but it was designed as a general purpose shortwave receiver, not a communications radio. However, if
By Reginald Beardsley · #296 ·
Re: Need more selectivity
I have several murata filters that I have for sale that can significantly improve your selectivity and with a little extra work you can make a two filter system
By MikeM · #295 ·
Need more selectivity
Hi, Y'all!? Long time Frog owner but first post here.? I'm hoping the collective can help me put this radio into mainstream use in the shack. I have been trying to pair this up with a Heathkit
By Justin Bowser - KI5GKD · #294 ·
Re: Not working and deaf
To start with, a complete alignment according to the service manual. Op zondag 16 juli 2023 om 01:22:59 CEST schreef Chris Rogers via groups.io <crvee8@...>: I have a
By MPX . · #293 ·
Re: Not working and deaf
Thanks to everyone for their tips. I will do some more investigating and see how i go.
By Chris Rogers <crvee8@...> · #292 ·
Re: Not working and deaf
Hi Dayle, Thanks for your advice. I will give it a try and see how I go.
By Chris Rogers <crvee8@...> · #291 ·
Re: Not working and deaf
The fault lays in the Wadley loop section . You need to ascertain the Mhz VFO is working, this runs from 55 mHz to 85 mHz. Because your lock light goes out at the higher frequencies, this oscillator
By Pentagrid · #290 ·