Blog Archives

Hy Gain 5 Peewit Roger Bleeps for sale

I have a few hand made Hy-Gain 5 roger Bleeps for sale.

These sound just like the real thing and are easy to fit.

Cost is £12.99 and that includes postage to the UK.

 

Full instructions on how to fit them will be sent with the bleep and full after sales service is provided.

Drop me an email if you want to order one.

cubwolf@live.co.uk

 

Actual bleep can be heard below

 

 

 

Advertisements

The things people get me doing….

A mate of mine has been nagging me for weeks to make him a roger bleep.

Not just any bleep but the uber annoying peewit that is found in the Hy-Gain V radios.

He could of bought one from ebay but I have fitted them in the past and they never really sounded right even after messing with the components. This one got the thumbs up from the critics on channel 14 in Leicester.

I really should get some etching stuff and knock some pcbs up but time is always the issue. Mind you when the lids on you cant see the stripboard anyway…

Cybernet PTBM121D4X Improvements

Ham Logo

There is always a lot of discussion about which is best cybernet or uniden ssb radios. Personally I like cybernet stuff but I admit uniden ssb export radios do work well on ssb.

A lot of the issues people have with cybernet stuff is a result of the way that they left the factory. Common complaints are scratchy ssb audio and awful fm transmit audio.

Below are a few things you can do to the 121 chassis. This is used in radios like the Hy-gain 2795,Tristar 747, Concorde 2 and lots of others including some Colt Excaliburs and the rare Major 688.

These simple mods will cure the ssb and fm audio

 

To improve the audio limiter performance change R150 to a 5.6k ohm

Also change R166 to a 5.6k ohm.

Also add a 1000pf (102) Capacitor One side to the junction of R28 and C32 and the other to ground.

Check the FM deviation level and adjust if needed using RV1

Change R40 to a 33 ohm to improve the bias on the driver transistor.

Change R44 to a 15 ohm and set the bias to the output transistor using RV2 by keying up the radio up on ssb with no audio and set the voltage on the base of Q10 to 0.7 volts.

Squelch Mod.

To stop the popping squelch remove R132 and add a link wire as shown below

h

Squelch mod

Squelch mod