Search:

Type: Posts; User: 5B4AJB

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds; generated 38 minute(s) ago.

  1. Thread: Cautionary tale

    by 5B4AJB
    Replies
    1
    Views
    91

    Yes, the diecast back on my old IC-P2E gets quite...

    Yes, the diecast back on my old IC-P2E gets quite warm on high power after a while, a nice feature in the winter...
  2. NiMh batteries don't mind being left for a long...

    NiMh batteries don't mind being left for a long time without cycling, unlike NiCd which have to be kept topped up.
    I wouldn't bother with monthly cycling for hydride cells, but do keep an eye on the...
  3. Replies
    7
    Views
    161

    Base Radios No, not if it's done properly, however, you need...

    No, not if it's done properly, however, you need a transmitter with enough bandwidth to carry the information. An amateur transceiver is limited to a few kHz, whereas you need a few hundred.
    ...
  4. Replies
    7
    Views
    161

    Base Radios Not quite sure what you are describing here, but...

    Not quite sure what you are describing here, but it is possible to use an audio amplifier for low frequencies, but you won't get the full output power.



    Yes, using a beam or Yagi antenna.


    ...
  5. Replies
    1
    Views
    145

    Yes, you should both be licensed (with a...

    Yes, you should both be licensed (with a callsign) to talk on the amateur bands.

    Getting a license is easy nowadays, find a local radio club and they will help you...
  6. Replies
    4
    Views
    199

    Best of luck!

    Best of luck!
  7. You wouldn't attach the wire directly to the...

    You wouldn't attach the wire directly to the plate or the plate would become part of the antenna. A foot (or more) of fishing line or some other insulating material should be between the antenna wire...
  8. Replies
    2
    Views
    220

    Handheld Radios Did you try the Yaesu downloads...

    Did you try the Yaesu downloads?
  9. A magnetic loop? easy to build, performance...

    A magnetic loop? easy to build, performance similar to a dipole.
    1.5m diameter works well on 20m and up with limited performance lower down.

    Perfect for spot frequency working, otherwise you have...
  10. It certainly is doable, albeit with some...

    It certainly is doable, albeit with some compromise.

    To begin with, most FM broadcast receivers expect a 75Ω antenna, while your average 2m transceiver expects 50Ω.

    Disregarding impedance, the...
  11. Replies
    6
    Views
    475

    Echolink! OK, OK, it's VOIP/OR but close enough -...

    Echolink! OK, OK, it's VOIP/OR but close enough - you may have to do a bit of searching for a busy channel, but there are some excellent waffle channels.

    Library! pre-internet information! you...
  12. Thread: storage space

    by 5B4AJB
    Replies
    3
    Views
    387

    I think our code monkey is on extended leave for...

    I think our code monkey is on extended leave for the time being.
    Linking to external sites is allowed, however, their long-term reliability seems to vary, some being acquired by other companies,...
  13. Thread: New Around

    by 5B4AJB
    Replies
    1
    Views
    316

    Greetings and welcome!

    Greetings and welcome!
  14. Replies
    1
    Views
    200

    Greetings and welcome!

    Greetings and welcome!
  15. Replies
    0
    Views
    206

    Es'hail-2 web-sdr

    I stumbled across a webpage which allows you to tune around a Phase-4 satellite.

    Received lots of SSTV, DRM, CW etc. Those of you into DTV should also find it useful...
  16. Replies
    2
    Views
    308

    Some 2/70 mobile antenna are available with an...

    Some 2/70 mobile antenna are available with an "N" connector, the chassis type sockets are usually pretty well sealed and easy to mount.
    If the wind load isn't too crazy, you could mount the antenna...
  17. Replies
    1
    Views
    453

    Yes, it has one of the best names created by...

    Yes, it has one of the best names created by mankind, called diddle.

    Try to find a Kantronics manual, the one(s) that came with my KAM explains everything. A lot of it is KAM-specific, but other...
  18. Base Radios Use FM for packet, unless you're on (USB) H.F. at...

    Use FM for packet, unless you're on (USB) H.F. at 300 Baud.

    For 9600 Baud you need to use a discriminator output, into the TNC.

    Pin 12 on your ACC socket round the back of the radio will do...
  19. Changing the power supply to the LED's is the...

    Changing the power supply to the LED's is the solution. Try using a Voltage Regulator instead of a Switch Mode type supply.
  20. Mobile Radios First of all, you need a callsign - contact your...

    First of all, you need a callsign - contact your local club to arrange a course & examination.

    Secondly, if you're in a valley, surrounded by trees, in the middle of nowhere, no type of radio is...
  21. Replies
    3
    Views
    532

    I can't help you with a choke as I never (heard)...

    I can't help you with a choke as I never (heard) used one on a VHF vertical.

    One thing I would suggest is slipping 2-3, 2 inch long bits of hosepipe over the coax before you put the plugs on. This...
  22. Thread: TS-440s problem

    by 5B4AJB
    Replies
    3
    Views
    439

    First thing that comes to mind is the Voltage...

    First thing that comes to mind is the Voltage coming into the radio, is it stable?

    A few seconds later I think this may be something more in-depth inside the radio...
  23. Replies
    7
    Views
    664

    Base Radios yeah, could be those things too, might be worth...

    yeah, could be those things too, might be worth putting a ferrite on the power leads too if the antenna is very close...
  24. Replies
    7
    Views
    664

    Base Radios Page 12 of the manual...

    Page 12 of the manual shows pins 1 & 7 are used for the microphone circuit.

    For example:-
    An old pair of headphones you can chop up would be easy to connect to a P.C.
    Cut the wire near the...
  25. Replies
    7
    Views
    664

    Base Radios Well, a typical car battery will comfortably run...

    Well, a typical car battery will comfortably run it on full power for about half an hour, longer if the SWR is low.

    Is it possible to make an adaptor for the microphone and plug it into a PC or...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4